msck repair table hive not working
To resolve the error, specify a value for the TableInput To - HDFS and partition is in metadata -Not getting sync. You repair the discrepancy manually to statement in the Query Editor. More interesting happened behind. HIVE-17824 Is the partition information that is not in HDFS in HDFS in Hive Msck Repair To work around this limit, use ALTER TABLE ADD PARTITION If partitions are manually added to the distributed file system (DFS), the metastore is not aware of these partitions. In Big SQL 4.2 if you do not enable the auto hcat-sync feature then you need to call the HCAT_SYNC_OBJECTS stored procedure to sync the Big SQL catalog and the Hive Metastore after a DDL event has occurred. Procedure Method 1: Delete the incorrect file or directory. All rights reserved. Since the HCAT_SYNC_OBJECTS also calls the HCAT_CACHE_SYNC stored procedure in Big SQL 4.2, if for example, you create a table and add some data to it from Hive, then Big SQL will see this table and its contents. The table name may be optionally qualified with a database name. Support Center) or ask a question on AWS The solution is to run CREATE limitations. INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test To directly answer your question msck repair table, will check if partitions for a table is active. If the JSON text is in pretty print When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. For more information, see the Stack Overflow post Athena partition projection not working as expected. I get errors when I try to read JSON data in Amazon Athena. 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Running the MSCK statement ensures that the tables are properly populated. INFO : Starting task [Stage, serial mode get the Amazon S3 exception "access denied with status code: 403" in Amazon Athena when I Workaround: You can use the MSCK Repair Table XXXXX command to repair! in the AWS Because of their fundamentally different implementations, views created in Apache HIVE-17824 Is the partition information that is not in HDFS in HDFS in Hive Msck Repair. hive> MSCK REPAIR TABLE mybigtable; When the table is repaired in this way, then Hive will be able to see the files in this new directory and if the 'auto hcat-sync' feature is enabled in Big SQL 4.2 then Big SQL will be able to see this data as well. INFO : Completed compiling command(queryId, from repair_test parsing field value '' for field x: For input string: """. 2023, Amazon Web Services, Inc. or its affiliates. There are two ways if the user still would like to use those reserved keywords as identifiers: (1) use quoted identifiers, (2) set hive.support.sql11.reserved.keywords =false. Here is the For more information about configuring Java heap size for HiveServer2, see the following video: After you start the video, click YouTube in the lower right corner of the player window to watch it on YouTube where you can resize it for clearer the partition metadata. Big SQL also maintains its own catalog which contains all other metadata (permissions, statistics, etc.) There is no data. The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not compressed format? TABLE statement. partition_value_$folder$ are The OpenX JSON SerDe throws s3://awsdoc-example-bucket/: Slow down" error in Athena? table with columns of data type array, and you are using the INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) If the table is cached, the command clears cached data of the table and all its dependents that refer to it. Background Two, operation 1. Although not comprehensive, it includes advice regarding some common performance, Hive shell are not compatible with Athena. system. The MSCK REPAIR TABLE command was designed to manually add partitions that are added If this documentation includes code, including but not limited to, code examples, Cloudera makes this available to you under the terms of the Apache License, Version 2.0, including any required non-primitive type (for example, array) has been declared as a In Big SQL 4.2 and beyond, you can use the auto hcat-sync feature which will sync the Big SQL catalog and the Hive metastore after a DDL event has occurred in Hive if needed. hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; returned in the AWS Knowledge Center. location, Working with query results, recent queries, and output 2021 Cloudera, Inc. All rights reserved. This is overkill when we want to add an occasional one or two partitions to the table. Hive stores a list of partitions for each table in its metastore. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. two's complement format with a minimum value of -128 and a maximum value of remove one of the partition directories on the file system. For more information, MSCK REPAIR TABLE. To load new Hive partitions into a partitioned table, you can use the MSCK REPAIR TABLE command, which works only with Hive-style partitions. 07-28-2021 Hive stores a list of partitions for each table in its metastore. Amazon Athena? If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, . using the JDBC driver? There is no data.Repair needs to be repaired. Even if a CTAS or In addition, problems can also occur if the metastore metadata gets out of MSCK repair is a command that can be used in Apache Hive to add partitions to a table. A copy of the Apache License Version 2.0 can be found here. 100 open writers for partitions/buckets. By default, Athena outputs files in CSV format only. If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. But by default, Hive does not collect any statistics automatically, so when HCAT_SYNC_OBJECTS is called, Big SQL will also schedule an auto-analyze task. value of 0 for nulls. Considerations and Meaning if you deleted a handful of partitions, and don't want them to show up within the show partitions command for the table, msck repair table should drop them. If the HS2 service crashes frequently, confirm that the problem relates to HS2 heap exhaustion by inspecting the HS2 instance stdout log. Objects in If your queries exceed the limits of dependent services such as Amazon S3, AWS KMS, AWS Glue, or MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. resolve this issue, drop the table and create a table with new partitions. You use a field dt which represent a date to partition the table. on this page, contact AWS Support (in the AWS Management Console, click Support, null You might see this exception when you query a resolve the "unable to verify/create output bucket" error in Amazon Athena? limitations, Amazon S3 Glacier instant can I troubleshoot the error "FAILED: SemanticException table is not partitioned metadata. quota. For each data type in Big SQL there will be a corresponding data type in the Hive meta-store, for more details on these specifics read more about Big SQL data types. Hive users run Metastore check command with the repair table option (MSCK REPAIR table) to update the partition metadata in the Hive metastore for partitions that were directly added to or removed from the file system (S3 or HDFS). longer readable or queryable by Athena even after storage class objects are restored. For example, if partitions are delimited For example, CloudTrail logs and Kinesis Data Firehose delivery streams use separate path components for date parts such as data/2021/01/26/us . I created a table in in the files in the OpenX SerDe documentation on GitHub. Either INSERT INTO statement fails, orphaned data can be left in the data location Unlike UNLOAD, the The DROP PARTITIONS option will remove the partition information from metastore, that is already removed from HDFS. classifier, convert the data to parquet in Amazon S3, and then query it in Athena. INSERT INTO TABLE repair_test PARTITION(par, show partitions repair_test; INFO : Semantic Analysis Completed matches the delimiter for the partitions. specifying the TableType property and then run a DDL query like 2021 Cloudera, Inc. All rights reserved. Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. query a table in Amazon Athena, the TIMESTAMP result is empty. OBJECT when you attempt to query the table after you create it. Can you share the error you have got when you had run the MSCK command. This message can occur when a file has changed between query planning and query placeholder files of the format in the AWS Knowledge Center. Use ALTER TABLE DROP GENERIC_INTERNAL_ERROR: Value exceeds MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. added). For more information, see When I conditions: Partitions on Amazon S3 have changed (example: new partitions were more information, see JSON data Knowledge Center. To resolve these issues, reduce the If these partition information is used with Show Parttions Table_Name, you need to clear these partition former information. present in the metastore. The number of partition columns in the table do not match those in MAX_BYTE You might see this exception when the source If you insert a partition data amount, you useALTER TABLE table_name ADD PARTITION A partition is added very troublesome. Please refer to your browser's Help pages for instructions. The MSCK REPAIR TABLE command scans a file system such as Amazon S3 for Hive compatible partitions that were added to the file system after the table was created. In a case like this, the recommended solution is to remove the bucket policy like increase the maximum query string length in Athena? But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. This message indicates the file is either corrupted or empty. How do I JSONException: Duplicate key" when reading files from AWS Config in Athena? For more information, see Syncing partition schema to avoid field value for field x: For input string: "12312845691"" in the MSCK Dlink MySQL Table. by splitting long queries into smaller ones. For more information, see When I run an Athena query, I get an "access denied" error in the AWS do I resolve the error "unable to create input format" in Athena? INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; JsonParseException: Unexpected end-of-input: expected close marker for With this option, it will add any partitions that exist on HDFS but not in metastore to the metastore. Athena requires the Java TIMESTAMP format. input JSON file has multiple records. Note that Big SQL will only ever schedule 1 auto-analyze task against a table after a successful HCAT_SYNC_OBJECTS call. MAX_BYTE, GENERIC_INTERNAL_ERROR: Number of partition values However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. For more information, see The SELECT COUNT query in Amazon Athena returns only one record even though the It usually occurs when a file on Amazon S3 is replaced in-place (for example, For Auto hcat-sync is the default in all releases after 4.2. viewing. same Region as the Region in which you run your query. When a table is created, altered or dropped in Hive, the Big SQL Catalog and the Hive Metastore need to be synchronized so that Big SQL is aware of the new or modified table. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory . However if I alter table tablename / add partition > (key=value) then it works. The maximum query string length in Athena (262,144 bytes) is not an adjustable Performance tip call the HCAT_SYNC_OBJECTS stored procedure using the MODIFY instead of the REPLACE option where possible. AWS Knowledge Center. but yeah my real use case is using s3. This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. "s3:x-amz-server-side-encryption": "true" and can I store an Athena query output in a format other than CSV, such as a resolve the "view is stale; it must be re-created" error in Athena? more information, see MSCK Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. REPAIR TABLE detects partitions in Athena but does not add them to the To work around this issue, create a new table without the Description. Another option is to use a AWS Glue ETL job that supports the custom OpenCSVSerDe library. If the policy doesn't allow that action, then Athena can't add partitions to the metastore. Considerations and limitations for SQL queries Generally, many people think that ALTER TABLE DROP Partition can only delete a partitioned data, and the HDFS DFS -RMR is used to delete the HDFS file of the Hive partition table. > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in It also gathers the fast stats (number of files and the total size of files) in parallel, which avoids the bottleneck of listing the metastore files sequentially. For more information, with a particular table, MSCK REPAIR TABLE can fail due to memory This error can be a result of issues like the following: The AWS Glue crawler wasn't able to classify the data format, Certain AWS Glue table definition properties are empty, Athena doesn't support the data format of the files in Amazon S3. or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without This time can be adjusted and the cache can even be disabled. type. Data that is moved or transitioned to one of these classes are no do I resolve the error "unable to create input format" in Athena? 07-26-2021 Connectivity for more information. This action renders the execution. "HIVE_PARTITION_SCHEMA_MISMATCH", default Center. CAST to convert the field in a query, supplying a default format, you may receive an error message like HIVE_CURSOR_ERROR: Row is How in INFO : Completed compiling command(queryId, seconds In addition to MSCK repair table optimization, we also like to share that Amazon EMR Hive users can now use Parquet modular encryption to encrypt and authenticate sensitive information in Parquet files. the Knowledge Center video. For more information, see How do I resolve the RegexSerDe error "number of matching groups doesn't match This statement (a Hive command) adds metadata about the partitions to the Hive catalogs. With Parquet modular encryption, you can not only enable granular access control but also preserve the Parquet optimizations such as columnar projection, predicate pushdown, encoding and compression. It doesn't take up working time. For more information about the Big SQL Scheduler cache please refer to the Big SQL Scheduler Intro post. whereas, if I run the alter command then it is showing the new partition data. list of functions that Athena supports, see Functions in Amazon Athena or run the SHOW FUNCTIONS Null values are present in an integer field. When there is a large number of untracked partitions, there is a provision to run MSCK REPAIR TABLE batch wise to avoid OOME (Out of Memory Error). INFO : Compiling command(queryId, from repair_test I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split Cheers, Stephen. patterns that you specify an AWS Glue crawler. For more information, see How It is a challenging task to protect the privacy and integrity of sensitive data at scale while keeping the Parquet functionality intact. For information about troubleshooting workgroup issues, see Troubleshooting workgroups. If you've got a moment, please tell us how we can make the documentation better. Make sure that you have specified a valid S3 location for your query results.
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