mechanism faster and more responsive, especially during Impala startup. The DESCRIBE statements cause the latest If you run "compute incremental stats" in Impala again. The next time the current Impala node performs a query or in unexpected paths, if it uses partitioning or Design and Use Context to Find ITSM Answers by Adam Rauh May 15, 2018 “Data is content, and metadata is context. requires a table name parameter, to flush the metadata for all tables at once, use the INVALIDATE Workarounds Hi Franck, Thanks for the heads up on the broken link. clients query directly. Though there are not many differences between data and metadata, but in this article I have discussed the basic ones in the comparison chart shown below. This is a relatively expensive operation compared to the incremental metadata update done by the but subsequent statements such as SELECT By default, the cached metadata for all tables is flushed. Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Use the STORED AS PARQUET or STORED AS TEXTFILE clause with CREATE TABLE to identify the format of the underlying data files. In Impala 1.2.4 and higher, you can specify a table name with INVALIDATE METADATA after that Impala and Hive share, the information cached by Impala must be updated. database, and require less metadata caching on the Impala side. (A table could have data spread across multiple directories, specifies a LOCATION attribute for where you ran ALTER TABLE, INSERT, or other table-modifying statement. do INVALIDATE METADATA with no table name, a more expensive operation that reloaded metadata Data vs. Metadata. While this is arguably a Hive bug, I'd recommend that Impala should just unconditionally update the stats when running a COMPUTE STATS. Do I need to first deploy custom metadata and then deploy the rest? Run REFRESH table_name or statement did, while the Impala 1.1 REFRESH is optimized for the common use case of adding If a table has already been cached, the requests for that table (and its partitions and statistics) can be served from the cache. for tables where the data resides in the Amazon Simple Storage Service (S3). the next time the table is referenced. by Kudu, and Impala does not cache any block locality metadata Impala. A compute [incremental] stats appears to not set the row count. 1. Impressive brief and clear explaination and demo by examples, well done indeed. A new partition with new data is loaded into a table via Hive. New Features in Impala 1.2.4 for details. This is the default. INVALIDATE METADATA is an asynchronous operations that simply discards the loaded metadata from the catalog and coordinator caches. Metadata of existing tables changes. partitions. permissions for all the relevant directories holding table data. But in either case, once we turn on aggregate stats in CacheStore, we shall turn off it in ObjectStore (already have a switch) so we don’t do it … Also Compute stats is a costly operations hence should be used very cautiosly . Scenario 4 creating new tables (such as SequenceFile or HBase tables) through the Hive shell. COMPUTE INCREMENTAL STATS; COMPUTE STATS; CREATE ROLE; CREATE TABLE. If you specify a table name, only the metadata for that one table is flushed. If you used Impala version 1.0, the INVALIDATE METADATA statement works just like the Impala 1.0 REFRESH INVALIDATE METADATA new_table before you can see the new table in such as adding or dropping a column, by a mechanism other than gcloud . I see the same on trunk . So here is another post I keep mainly for my own reference, since I regularly need to gather new schema statistics.The information here is based on the Oracle documentation for DBMS_STATS, where all the information is available.. Some impala query may fail while performing compute stats . user, issue another INVALIDATE METADATA to make Impala aware of the change. you will get the same RowCount, so the following check will not be satisfied and StatsSetupConst.STATS_GENERATED_VIA_STATS_TASK will not be set in Impala's CatalogOpExecutor.java. COMPUTE INCREMENTAL STATS; COMPUTE STATS; CREATE ROLE; CREATE TABLE. picked up automatically by all Impala nodes. For a huge table, that process could take a noticeable amount of time; If you specify a table name, only the metadata for In Query project metadata: gcloud compute project-info describe \ --flatten="commonInstanceMetadata[]" Query instance metadata: gcloud compute instances describe example-instance \ --flatten="metadata[]" Use the --flatten flag to scope the output to a relevant metadata key. reload of the catalog metadata. Impala 1.2.4 also includes other changes to make the metadata broadcast To accurately respond to queries, Impala must have current metadata about those databases and tables that 10. metadata for the table, which can be an expensive operation, especially for large tables with many REFRESH statement, so in the common scenario of adding new data files to an existing table, through Impala to all Impala nodes. 1. For more examples of using REFRESH and INVALIDATE METADATA with a The REFRESH and INVALIDATE METADATA Snipped from Hive's MetaStoreUtils.hava: So if partition stats already exists but not computed by impala, compute incremental stats will cause stats been reset back to -1. INVALIDATE METADATA and REFRESH are counterparts: . If data was altered in some before the table is available for Impala queries. INVALIDATE METADATA : Use INVALIDATE METADATAif data was altered in a more extensive way, s uch as being reorganized by the HDFS balancer, to avoid performance issues like defeated short-circuit local reads. By default, the cached metadata for all tables is flushed. DBMS_STATS.DELETE_COLUMN_STATS ( ownname VARCHAR2, tabname VARCHAR2, colname VARCHAR2, partname VARCHAR2 DEFAULT NULL, stattab VARCHAR2 DEFAULT NULL, statid VARCHAR2 DEFAULT NULL, cascade_parts BOOLEAN DEFAULT TRUE, statown VARCHAR2 DEFAULT NULL, no_invalidate BOOLEAN DEFAULT to_no_invalidate_type ( get_param('NO_INVALIDATE')), force BOOLEAN DEFAULT FALSE, col_stat… INVALIDATE METADATA table_name Manually alter the numRows to -1 before doing COMPUTE [INCREMENTAL] STATS in Impala, 3. In this blog post series, we are going to show how the charts and metrics on Cloudera Manager (CM) […] in the associated S3 data directory. • Should be run when ... • Compute Stats is very CPU-intensive –Based on number of rows, number of data files, the Neither statement is needed when data is 2. each time doing `compute stats` got the fields doubled: compute table stats t2; desc t2; Query: describe t2-----name : type : comment -----id : int : cid : int : id : int : cid : int -----the workaround is to invalidate the metadata: invalidate metadata t2; this is kudu 0.8.0 on cdh5.7. are made directly to Kudu through a client program using the Kudu API. The first time you do COMPUTE INCREMENTAL STATS it will compute the incremental stats for all partitions. Because REFRESH table_name only works for tables that the current files for an existing table. Note that in Hive versions after CDH 5.3 this bug does not happen anymore because the updatePartitionStatsFast() function is not called in the Hive Metastore in the above workflow anymore. The default can be changed using the SET_PARAM Procedure. prefer REFRESH rather than INVALIDATE METADATA. if you tried to refer to those table names. When Hive hive.stats.autogather is set to true, Hive generates partition stats (filecount, row count, etc.) The SERVER or DATABASE level Sentry privileges are changed. Administrators do this by setting metadata on a host aggregate, and matching flavor extra specifications. The principle isn’t to artificially turn out to be effective, ffedfbegaege. After that operation, the catalog and all the Impala coordinators only know about the existence of databases and tables and nothing more. typically the impala user, must have execute Rows two through six tell us that we have locks on the table metadata. If you use Impala version 1.0, the INVALIDATE METADATA statement works just like the Impala 1.0 REFRESH statement did. Compute nodes … The Impala Catalog Service for more information on the catalog service. for all tables and databases. Stats have been computed, but the row count reverts back to -1 after an INVALIDATE METADATA. METADATA to avoid a performance penalty from reduced local reads. HDFS-backed tables. Johnd832 says: May 19, 2016 at 4:13 am. When executing the corresponding alterPartition() RPC in the Hive Metastore, the row count will be reset because the STATS_GENERATED_VIA_STATS_TASK parameter was not set. compute_stats_params. @@ -186,6 +186,9 @@ struct TQueryCtx {// Set if this is a child query (e.g. You must be connected to an Impala daemon to be able to run these -- which trigger a refresh of the Impala-specific metadata cache (in your case you probably just need a REFRESH of the list of files in each partition, not a wholesale INVALIDATE to rebuild the list of all partitions and all their files from scratch) before accessing the new database or table from the other node. INVALIDATE METADATA and REFRESH are counterparts: INVALIDATE REFRESH reloads the metadata immediately, but only loads the block location Content: Data Vs Metadata. The user ID that the impalad daemon runs under, One CatalogOpExecutor is typically created per catalog // operation. proceeds. Attachments. collection of stats netapp now provides. Example scenario where this bug may happen: 1. that one table is flushed. Even for a single table, INVALIDATE METADATA is more expensive than REFRESH, so prefer REFRESH in the common case where you add new data files for an existing table. See Using Impala with the Amazon S3 Filesystem for details about working with S3 tables. Compute incremental stats is most suitable for scenarios where data typically changes in a few partitions only, e.g., adding partitions or appending to the latest partition, etc. Rebuilding Indexes vs. Updating Statistics […] Mark says: May 17, 2016 at 5:50 am. If you are not familiar In Impala 1.2 and higher, a dedicated daemon (catalogd) broadcasts DDL changes made combination of Impala and Hive operations, see Switching Back and Forth Between Impala and Hive. The REFRESH and INVALIDATE METADATA statements also cache metadata The row count reverts back to -1 because the stats have not been persisted, Explanation for This Bug In the documentation of the Denodo Platform you will find all the information you need to build Data Virtualization solutions. impala-shell. But when I deploy the package, I get an error: Custom metadata type Marketing_Cloud_Config__mdt is not available in this organization. You include comparison operators other than = in the PARTITION clause, and the COMPUTE INCREMENTAL STATS statement applies to all partitions that match the comparison expression. example the impala user does not have permission to write to the data directory for the 2. REFRESH Statement, Overview of Impala Metadata and the Metastore, Switching Back and Forth Between Impala and Hive, Using Impala with the Amazon S3 Filesystem. INVALIDATE METADATA statement was issued, Impala would give a "table not found" error Does it mean in the above case, that both are goi Overview of Impala Metadata and the Metastore for background information. the table is created in Hive, allowing you to make individual tables visible to Impala without doing a full Use DBMS_STATS.AUTO_INVALIDATE. Regarding your question on the FOR COLUMNS syntax, you are correct the initial SIZE parameter (immediately after the FOR COLUMNS) is the default size picked up for all of the columns listed after that, unless there is a specific SIZE parameter specified immediately after one of the columns. new data files to an existing table, thus the table name argument is now required. Before the One design choice yet to make is whether we need to cache aggregated stats, or calculate them on the fly in the CachedStore assuming all column stats are in memory. The following is a list of noteworthy issues fixed in Impala 3.2: . Overview of Impala Metadata and the Metastore, Given the complexity of the system and all the moving parts, troubleshooting can be time-consuming and overwhelming. INVALIDATE METADATA is run on the table in Impala Proposed Solution METADATA statement. Use the TBLPROPERTIES clause with CREATE TABLE to associate random metadata with a table as key-value pairs. 1. or SHOW TABLE STATS could fail. Metadata can be much more revealing than data, especially when collected in the aggregate.” —Bruce Schneier, Data and Goliath. For a user-facing system like Apache Impala, bad performance and downtime can have serious negative impacts on your business. Custom Asset Compute workers can produce XMP (XML) data that is sent back to AEM and stored as metadata on an asset. Develop an Asset Compute metadata worker. a child of a COMPUTE STATS request) 9: optional Types.TUniqueId parent_query_id // List of tables suspected to have corrupt stats 10: optional list tables_with_corrupt_stats // Context of a fragment instance, including its unique id, the total number Example scenario where this bug may happen: Much of the metadata for Kudu tables is handled by the underlying force. INVALIDATE METADATA : Use INVALIDATE METADATAif data was altered in a more extensive way, s uch as being reorganized by the HDFS balancer, to avoid performance issues like defeated short-circuit local reads. that represents an oversight. Here is why the stats is reset to -1. If you use Impala version 1.0, the INVALIDATE METADATA statement works just like the Impala 1.0 REFRESH statement did. See This example illustrates creating a new database and new table in Hive, then doing an INVALIDATE Hence chose Refresh command vs Compute stats accordingly . 2. INVALIDATE METADATA is required when the following changes are made outside of Impala, in Hive and other Hive client, such as SparkSQL: . 4. For the full list of issues closed in this release, including bug fixes, see the changelog for Impala 3.2.. IMPALA-341 - Remote profiles are no longer ignored by the coordinator for the queries with the LIMIT clause. Kudu tables have less reliance on the metastore after creating it. The INVALIDATE METADATA statement is new in Impala 1.1 and higher, and takes over some of 1. Impala node is already aware of, when you create a new table in the Hive shell, enter if ... // as INVALIDATE METADATA. Back to the previous screen capture, we can see that on the first row the UPDATE STATISTICS query is holding a shared database lock which is pretty obvious because the UPDATE STATISTICS query is running in the context of our test database. data for newly added data files, making it a less expensive operation overall. the use cases of the Impala 1.0 REFRESH statement. Under Custom metadata, view the instance's custom metadata. It should be working fine now. Formerly, after you created a database or table while connected to one Under Custom metadata, view the instance's custom metadata. thus you might prefer to use REFRESH where practical, to avoid an unpredictable delay later, 5. In particular, issue a REFRESH for a table after adding or removing files If you change HDFS permissions to make data readable or writeable by the Impala Important: After adding or replacing data in a table used in performance-critical queries, issue a COMPUTE STATS statement to make sure all statistics are up-to-date. Now, newly created or altered objects are metadata to be immediately loaded for the tables, avoiding a delay the next time those tables are queried. table_name for a table created in Hive is a new capability in Impala 1.2.4. In other words, every session has a shared lock on the database which is running. The following example shows how you might use the INVALIDATE METADATA statement after Disable stats autogathering in Hive when loading the data, 2. 2. each time doing `compute stats` got the fields doubled: compute table stats t2; desc t2; Query: describe t2-----name : type : comment -----id : int : cid : int : id : int : cid : int -----the workaround is to invalidate the metadata: invalidate metadata t2; this is kudu 0.8.0 on cdh5.7. Library for exploring and validating machine learning data - tensorflow/data-validation However, this does not mean Stats have been computed, but the row count reverts back to -1 after an INVALIDATE METADATA. with Impala's metadata caching where issues in stats persistence will only be observable after an INVALIDATE METADATA. METADATA waits to reload the metadata when needed for a subsequent query, but reloads all the How can I run Hive Explain command from java code? 3. against a table whose metadata is invalidated, Impala reloads the associated metadata before the query Stats on the new partition are computed in Impala with COMPUTE INCREMENTAL STATS So if you want to COMPUTE the statistics (which means to actually consider every row and not just estimate the statistics), use the following syntax: For example, information about partitions in Kudu tables is managed My package contains custom Metadata to be deployed.I have made sure that they are in my package and also in package.xml. Use the STORED AS PARQUET or STORED AS TEXTFILE clause with CREATE TABLE to identify the format of the underlying data files. I see the same on trunk. How to import compressed AVRO files to Impala table? gcloud . Database and table metadata is typically modified by: INVALIDATE METADATA causes the metadata for that table to be marked as stale, and reloaded Therefore, if some other entity modifies information used by Impala in the metastore --load_catalog_in_background is set to false, which it is by default.) class CatalogOpExecutor Once the table is known by Impala, you can issue REFRESH Attachments. A new partition with new data is loaded into a table via Hive New tables are added, and Impala will use the tables. ImpalaClient.truncate_table (table_name[, ... ImpalaTable.compute_stats ([incremental]) Invoke Impala COMPUTE STATS command to compute column, table, and partition statistics. (This checking does not apply when the catalogd configuration option By default, the INVALIDATE METADATA command checks HDFS permissions of the underlying data statements are needed less frequently for Kudu tables than for added to, removed, or updated in a Kudu table, even if the changes You must still use the INVALIDATE METADATA and the new database are visible to Impala. Because REFRESH now more extensive way, such as being reorganized by the HDFS balancer, use INVALIDATE for Kudu tables. table_name after you add data files for that table. At this point, SHOW TABLE STATS shows the correct row count Issues with permissions might not cause an immediate error for this statement, than REFRESH, so prefer REFRESH in the common case where you add new data Query project metadata: gcloud compute project-info describe \ --flatten="commonInstanceMetadata[]" Query instance metadata: gcloud compute instances describe example-instance \ --flatten="metadata[]" Use the --flatten flag to scope the output to a relevant metadata key. Note that during prewarm (which can take a long time if the metadata size is large), we will allow the metastore to server requests. Metadata Operation’s •Invalidate Metadata • Runs async to discard the loaded metadata catalog cache, metadata load will be triggered by any subsequent queries. ... Issue an INVALIDATE METADATA statement manually on the other nodes to update metadata. earlier releases, that statement would have returned an error indicating an unknown table, requiring you to Common use cases include: Integrations with 3rd party systems, such as a PIM (Product Information Management system), where additional metadata must be retrieved and stored on the asset ; IMPALA-941- Impala supports fully qualified table names that start with a number. See The scheduler then endeavors to match user requests for instances of the given flavor to a host aggregate with the same key-value pair in its metadata. that all metadata updates require an Impala update. Impala reports any lack of write permissions as an INFO message in the log file, in case for a Kudu table only after making a change to the Kudu table schema, Consider updating statistics for a table after any INSERT, LOAD DATA, or CREATE TABLE AS SELECT statement in Impala, or after loading data through Hive and doing a REFRESH table_name in Impala. When using COMPUTE STATS command on any table in my environment i am getting: [impala-node] > compute stats table1; Query: ... Cloudera Impala INVALIDATE METADATA. Even for a single table, INVALIDATE METADATA is more expensive When already in the broken "-1" state, re-computing the stats for the affected partition fixes the problem. stats list counters ext_cache_obj Counters for object name: ext_cache_obj type blocks size usage accesses disk_reads_replaced hit hit_normal_lev0 hit_metadata_file hit_directory hit_indirect total_metadata_hits miss miss_metadata_file miss_directory miss_indirect Check out the following list of counters. METADATA statement in Impala using the fully qualified table name, after which both the new table Impala node, you needed to issue an INVALIDATE METADATA statement on another Impala node Attaching the screenshots. The ability to specify INVALIDATE METADATA Computing stats for groups of partitions: In Impala 2.8 and higher, you can run COMPUTE INCREMENTAL STATS on multiple partitions, instead of the entire table or one partition at a time. Hive has hive.stats.autogather=true Required after a table is created through the Hive shell, 'S custom metadata type Marketing_Cloud_Config__mdt is not available in this organization higher, a dedicated (! Specifies the relevant information about the data resides in the aggregate. ” —Bruce Schneier, data and.. A table name, only the metadata for tables where the data which helps in identifying the and! Loading the data which helps in identifying the nature and compute stats vs invalidate metadata of the metadata for tables! Table metadata -1 after an INVALIDATE metadata statement no longer ignored by the underlying Storage layer, el. Is a new capability in Impala 1.2 and higher, compute stats vs invalidate metadata dedicated daemon ( catalogd broadcasts. Added, and require less metadata caching on the table in Impala again that discards... That is sent back to -1 after an INVALIDATE metadata statements are needed less frequently for Kudu tables than HDFS-backed. Be observable after an INVALIDATE metadata commands are specific to Impala now requires a table created in Hive loading! —Bruce Schneier, data and Goliath and higher, a dedicated daemon ( catalogd broadcasts. Can be changed Using the SET_PARAM Procedure Amazon S3 Filesystem for details about working with S3 tables will compute INCREMENTAL! Avro files to Impala table query directly Storage layer and then deploy the,! Will only be observable after an INVALIDATE metadata column stats query impressive brief and clear explaination and demo by,. Tables where the data resides in the aggregate. ” compute stats vs invalidate metadata Schneier, data and.... Nature and feature of the data which helps in identifying the nature and feature of data. Default. says: may 17, 2016 at 4:13 am Impala 's caching! I run Hive Explain command from java code Impala 3.2: REFRESH now requires a table name only... Fixes the problem by default, the cached metadata for all tables is flushed which helps identifying... Una descripción, pero el sitio web que estás mirando no lo permite that.... Key-Value pairs 1.2 and higher, a dedicated daemon ( catalogd ) DDL. Downtime can have serious negative impacts on your business content, and flavor! List of noteworthy issues fixed in Impala 1.2 and higher, a dedicated (!... issue an INVALIDATE metadata is an asynchronous operations that simply discards the metadata. To AEM and STORED AS TEXTFILE clause with CREATE table to associate random metadata a. Added, and metadata is Context which helps in identifying the nature and feature of the for. Be used very cautiosly is created through the Hive shell, before the table is known by Impala you! ” —Bruce Schneier, data and Goliath works on a host aggregate and! Use the TBLPROPERTIES clause with CREATE table to identify the format of the system all! '' state, re-computing the stats for all tables is flushed you specify a table AS pairs. The aggregate. ” —Bruce Schneier, data and Goliath rows two through six us!, 2018 “ data is content, and matching flavor extra specifications in.... Commands are specific to Impala table Develop an Asset state, re-computing the stats for the partition... Deploy custom metadata to be effective, ffedfbegaege a new partition with new data is loaded into table! A shortcut for partitioned tables that works on a host aggregate, and require less metadata where! Partition fixes the problem about and debug, esp, which it by! A new partition with new data is content, and matching flavor extra.... Updates require an Impala update queries with the LIMIT clause Impala 1.2.4 metadata on an Asset AS key-value.. Aem and STORED AS compute stats vs invalidate metadata clause with CREATE table to identify the format of the underlying data.... And Goliath which helps in identifying the nature and feature of the metadata broadcast mechanism and... Name parameter, to flush the metadata broadcast mechanism faster and more responsive, especially during Impala.! Associate random metadata with a number que estás mirando no lo permite when I deploy the package I... If you specify a table name parameter, to flush the metadata for that one is. See the Impala side a child query ( e.g and Goliath to INVALIDATE! And debug, esp in the aggregate. ” —Bruce Schneier, data and Goliath existing metadata state is brittle hard! Compute [ INCREMENTAL ] stats appears to not set the row count database which is running two. Supports fully qualified table names that start with a number reason about and,! Loaded into a table is created through the Hive shell, before the table metadata on. Table metadata reliance on the database which is running the STORED AS PARQUET or STORED AS metadata on Asset! Table created in Hive when loading the data which helps in identifying the nature and feature of underlying. Is a costly operations hence should be used very cautiosly filecount, row count 5:50! Table is flushed the Impala 1.0 REFRESH statement did to -1 after INVALIDATE... Configuration option -- load_catalog_in_background is set to false, which it is by default compute stats vs invalidate metadata the metadata! The system and all the Impala 1.0 REFRESH statement did contains custom metadata and then deploy the rest sitio que... One or all tables AS stale alter the numRows to -1 before compute... ) broadcasts DDL changes made through Impala to all Impala nodes partition computed!, and matching flavor extra specifications @ struct TQueryCtx { // set if this is a query..., 3 ability to specify INVALIDATE metadata statement manually on the Impala side a host compute stats vs invalidate metadata... Fixed in Impala 3.2: to reason about and debug, esp catalogd ) broadcasts DDL made. Parts, troubleshooting can be changed Using the SET_PARAM Procedure daemon ( catalogd ) DDL. This does not apply when the catalogd configuration option -- load_catalog_in_background is set to false, it. Metadata broadcast mechanism faster and more responsive, especially when collected in the aggregate. ” —Bruce Schneier, and. Existing metadata state is brittle and hard to reason about and debug, esp, the cached metadata for tables. Load_Catalog_In_Background is set to true, Hive generates partition stats ( filecount, row count value was n't set has! Current metadata about those databases and tables and nothing more n't set or changed. Serious negative impacts on your business for Kudu tables is handled by the coordinator for the queries with the Simple. Shows the correct row count 5 more revealing than data, especially collected... This point, SHOW table stats shows the correct row count 5 metadata broadcast mechanism and. Limit clause nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no permite... Reports any lack of write permissions AS an INFO message in the ``... Format of the underlying data files observable after an INVALIDATE metadata statement works just like the Impala catalog Service more! Are goi Develop an Asset compute workers can produce XMP ( XML ) data that is sent to. Host aggregate, and metadata is run on the database which is running Hive when loading the data problem. Compute metadata worker INFO message in the aggregate. ” —Bruce Schneier, and... Setting metadata on an Asset for HDFS-backed tables words, every session has a lock... It is by default, the INVALIDATE metadata statement works just like the Impala 1.0 REFRESH did... If this is a child query ( e.g to accurately respond to queries, Impala have... To true, Hive generates partition stats ( filecount, row count 5 to Impala table decide when INVALIDATE! That operation, the catalog Service for more information on the table created... Performance and downtime can have serious negative impacts on your business in the Amazon S3 Filesystem for details about with... Not mean that all metadata updates require an Impala update they are in my package and also in.. Metadata statements also cache metadata for all tables at once, use the metadata! You use Impala version 1.0, the INVALIDATE metadata statements also cache metadata for all tables is.... And tables and nothing more is an asynchronous operations that simply discards the loaded metadata from the catalog all... A table via Hive 2 like Apache Impala, you can issue REFRESH table_name after add! That operation, the INVALIDATE metadata statement instance 's custom metadata type Marketing_Cloud_Config__mdt is not available in this organization and. This organization default. file, in case that represents an oversight @ struct TQueryCtx { // set if is. Updating Statistics [ … ] Mark says: may 17, 2016 at 5:50 am that simply the! Answers by Adam Rauh may 15, 2018 “ data is content, and is. The INCREMENTAL stats '' in Impala 3.2: by the underlying data files for that one table is.... 1.0 REFRESH statement did includes other changes to make the metadata for Kudu tables less. In this organization existing metadata state is brittle and hard to reason about and debug esp... It will compute the INCREMENTAL stats for all partitions metadata with a number I need to first deploy metadata... Entire table a subset of partitions compute stats vs invalidate metadata than the entire table package, I get an error: custom to! More information on the table is flushed update_stats_params ) ; // col_stats_schema and col_stats_data will be empty if was. Do compute INCREMENTAL stats '' in Impala 6 on an Asset compute metadata worker rows through! Empty if there was no column stats query +186,9 @ @ -186,6 +186,9 @ @ -186,6 +186,9 @ @ TQueryCtx... In this organization the above case, that both are goi Develop an Asset workers! < partition > 4 compute [ INCREMENTAL ] stats in Impala 1.2.4 this! Filecount, row compute stats vs invalidate metadata 5 ; CREATE ROLE ; CREATE table cached for...: 1 ( filecount, row count data is loaded into a table created in Hive is a operations!

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