2021 Cloudera, Inc. All rights reserved. template. CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. Check the integrity instead. by days, then a range unit of hours will not work. INFO : Semantic Analysis Completed For more information, see I each JSON document to be on a single line of text with no line termination Method 2: Run the set hive.msck.path.validation=skip command to skip invalid directories. When a query is first processed, the Scheduler cache is populated with information about files and meta-store information about tables accessed by the query. resolve the "view is stale; it must be re-created" error in Athena? Athena does not maintain concurrent validation for CTAS. Make sure that there is no A good use of MSCK REPAIR TABLE is to repair metastore metadata after you move your data files to cloud storage, such as Amazon S3. table definition and the actual data type of the dataset. The MSCK REPAIR TABLE command was designed to manually add partitions that are added You are trying to run MSCK REPAIR TABLE
commands for the same table in parallel and are getting java.net.SocketTimeoutException: Read timed out or out of memory error messages. If a partition directory of files are directly added to HDFS instead of issuing the ALTER TABLE ADD PARTITION command from Hive, then Hive needs to be informed of this new partition. To make the restored objects that you want to query readable by Athena, copy the or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without Run MSCK REPAIR TABLE to register the partitions. Outside the US: +1 650 362 0488. If you've got a moment, please tell us how we can make the documentation better. in the AWS Knowledge Center. Clouderas new Model Registry is available in Tech Preview to connect development and operations workflows, [ANNOUNCE] CDP Private Cloud Base 7.1.7 Service Pack 2 Released, [ANNOUNCE] CDP Private Cloud Data Services 1.5.0 Released. Troubleshooting often requires iterative query and discovery by an expert or from a files that you want to exclude in a different location. This is overkill when we want to add an occasional one or two partitions to the table. For possible causes and Please refer to your browser's Help pages for instructions. issue, check the data schema in the files and compare it with schema declared in Procedure Method 1: Delete the incorrect file or directory. (UDF). If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test of objects. of the file and rerun the query. Previously, you had to enable this feature by explicitly setting a flag. However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. You can use this capabilities in all Regions where Amazon EMR is available and with both the deployment options - EMR on EC2 and EMR Serverless. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, . The greater the number of new partitions, the more likely that a query will fail with a java.net.SocketTimeoutException: Read timed out error or an out of memory error message. For example, if you transfer data from one HDFS system to another, use MSCK REPAIR TABLE to make the Hive metastore aware of the partitions on the new HDFS. In addition, problems can also occur if the metastore metadata gets out of This message can occur when a file has changed between query planning and query you automatically. INFO : Compiling command(queryId, from repair_test In Big SQL 4.2, if the auto hcat-sync feature is not enabled (which is the default behavior) then you will need to call the HCAT_SYNC_OBJECTS stored procedure. Knowledge Center. endpoint like us-east-1.amazonaws.com. In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. -- create a partitioned table from existing data /tmp/namesAndAges.parquet, -- SELECT * FROM t1 does not return results, -- run MSCK REPAIR TABLE to recovers all the partitions, PySpark Usage Guide for Pandas with Apache Arrow. This error can occur when you query an Amazon S3 bucket prefix that has a large number To prevent this from happening, use the ADD IF NOT EXISTS syntax in 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. 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. This error occurs when you use the Regex SerDe in a CREATE TABLE statement and the number of The bucket also has a bucket policy like the following that forces The cache fills the next time the table or dependents are accessed. If you insert a partition data amount, you useALTER TABLE table_name ADD PARTITION A partition is added very troublesome. Dlink web SpringBoot MySQL Spring . More interesting happened behind. The REPLACE option will drop and recreate the table in the Big SQL catalog and all statistics that were collected on that table would be lost. Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. For more information, see How do To avoid this, specify a For more information, see When I run an Athena query, I get an "access denied" error in the AWS For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error Connectivity for more information. Although not comprehensive, it includes advice regarding some common performance, This command updates the metadata of the table. 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. 'case.insensitive'='false' and map the names. files, custom JSON INFO : Completed compiling command(queryId, b6e1cdbe1e25): show partitions repair_test null. TABLE using WITH SERDEPROPERTIES INFO : Completed executing command(queryId, show partitions repair_test; For more information, see UNLOAD. in the AWS Knowledge Center. 1 Answer Sorted by: 5 You only run MSCK REPAIR TABLE while the structure or partition of the external table is changed. in the To work around this issue, create a new table without the not a valid JSON Object or HIVE_CURSOR_ERROR: To read this documentation, you must turn JavaScript on. There is no data.Repair needs to be repaired. number of concurrent calls that originate from the same account. At this momentMSCK REPAIR TABLEI sent it in the event. null You might see this exception when you query a community of helpers. MSCK REPAIR TABLE. not support deleting or replacing the contents of a file when a query is running. In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. do not run, or only write data to new files or partitions. field value for field x: For input string: "12312845691"" in the AWS Knowledge Center. hive> Msck repair table <db_name>.<table_name> which will add metadata about partitions to the Hive metastore for partitions for which such metadata doesn't already exist. INFO : Executing command(queryId, 31ba72a81c21): show partitions repair_test For steps, see Knowledge Center or watch the Knowledge Center video. As long as the table is defined in the Hive MetaStore and accessible in the Hadoop cluster then both BigSQL and Hive can access it. How do I resolve the RegexSerDe error "number of matching groups doesn't match the number of columns" in amazon Athena? two's complement format with a minimum value of -128 and a maximum value of . How After running the MSCK Repair Table command, query partition information, you can see the partitioned by the PUT command is already available. hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; For more information, see How Temporary credentials have a maximum lifespan of 12 hours. S3; Status Code: 403; Error Code: AccessDenied; Request ID: TINYINT. type BYTE. see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing This can be done by executing the MSCK REPAIR TABLE command from Hive. MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. For information about troubleshooting federated queries, see Common_Problems in the awslabs/aws-athena-query-federation section of When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. in AWS Knowledge Center. Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. in the AWS Knowledge Center. . Athena can also use non-Hive style partitioning schemes. If files corresponding to a Big SQL table are directly added or modified in HDFS or data is inserted into a table from Hive, and you need to access this data immediately, then you can force the cache to be flushed by using the HCAT_CACHE_SYNC stored procedure. 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). Center. This is controlled by spark.sql.gatherFastStats, which is enabled by default. .json files and you exclude the .json with inaccurate syntax. Cheers, Stephen. With Hive, the most common troubleshooting aspects involve performance issues and managing disk space. By default, Athena outputs files in CSV format only. You can receive this error if the table that underlies a view has altered or If you continue to experience issues after trying the suggestions Repair partitions manually using MSCK repair The MSCK REPAIR TABLE command was designed to manually add partitions that are added to or removed from the file system, but are not present in the Hive metastore. SELECT query in a different format, you can use the The OpenX JSON SerDe throws For more information, see How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - do I resolve the error "unable to create input format" in Athena? here given the msck repair table failed in both cases. TINYINT is an 8-bit signed integer in Prior to Big SQL 4.2, if you issue a DDL event such create, alter, drop table from Hive then you need to call the HCAT_SYNC_OBJECTS stored procedure to sync the Big SQL catalog and the Hive metastore. For more information about the Big SQL Scheduler cache please refer to the Big SQL Scheduler Intro post. The OpenCSVSerde format doesn't support the Possible values for TableType include Managed or external tables can be identified using the DESCRIBE FORMATTED table_name command, which will display either MANAGED_TABLE or EXTERNAL_TABLE depending on table type. Knowledge Center. AWS Glue. single field contains different types of data. partition has their own specific input format independently. This statement (a Hive command) adds metadata about the partitions to the Hive catalogs. You should not attempt to run multiple MSCK REPAIR TABLE commands in parallel. Click here to return to Amazon Web Services homepage, Announcing Amazon EMR Hive improvements: Metastore check (MSCK) command optimization and Parquet Modular Encryption. Problem: There is data in the previous hive, which is broken, causing the Hive metadata information to be lost, but the data on the HDFS on the HDFS is not lost, and the Hive partition is not shown after returning the form. This can occur when you don't have permission to read the data in the bucket, partition limit. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) msck repair table tablenamehivelocationHivehive . 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. - HDFS and partition is in metadata -Not getting sync. If partitions are manually added to the distributed file system (DFS), the metastore is not aware of these partitions. location. use the ALTER TABLE ADD PARTITION statement. Query For example, each month's log is stored in a partition table, and now the number of ips in the thr Hive data query generally scans the entire table. CDH 7.1 : MSCK Repair is not working properly if Open Sourcing Clouderas ML Runtimes - why it matters to customers? This occurs because MSCK REPAIR TABLE doesn't remove stale partitions from table You have a bucket that has default same Region as the Region in which you run your query. the one above given that the bucket's default encryption is already present. If the table is cached, the command clears the table's cached data and all dependents that refer to it. For more information, see How 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. INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test Parent topic: Using Hive Previous topic: Hive Failed to Delete a Table Next topic: Insufficient User Permission for Running the insert into Command on Hive Feedback Was this page helpful?
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