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). So I run MSCK REPAIR TABLE default.person but it fails with this error: Error: java.lang.NoSuchMethodException: org.apache.hadoop.hive.ql.metadata.Hive . Recover Partitions (MSCK REPAIR TABLE) Hive stores a list of partitions for each table in its metastore. hive> create external table foo (a int) partitioned by (date_key bigint) location 'hdfs:/tmp/foo'; OK Time taken: 3.359 seconds hive> msck repair table foo; FAILED: Execution Error, return . hive -hiveconf a=b To list all effective configurations on Hive shell, use the following command: hive> set; For example, use the following command to start Hive shell with debug logging enabled on the console: hive -hiveconf hive.root.logger=ALL,console Additional reading. MSCK REPAIR TABLE - Amazon Athena You can either load all partitions or load them individually. Bye Omar The text was updated successfully, but these errors were encountered: ️ 3 msck repair table and hive v2.1.0 - narkive For partitions that are not Hive compatible, use ALTER TABLE ADD PARTITION to load the partitions so that you can query the data. More. msck repair table wont work if you have data in the . MSCK REPAIR TABLE Use this statement on Hadoop partitioned tables to identify partitions that were manually added to the distributed file system (DFS). Solved: msck repair table bad behaviour - Cloudera Community In addition, we can use the Alter table add partition command to add the new partitions for a table. How to get hive to recognise new partitions created ... - RStudio Community It can be useful if you lose the data in your Hive metastore or if you are working in a cloud environment without a persistent metastore. MSCK REPAIR TABLE taking more time Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore; you must run MSCK REPAIR TABLE to register the partitions. |_day=5. . The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. Ans 2: For an unpartitioned table, all the data of the table will be stored in a single directory/folder in HDFS. This statement does not apply to Delta Lake tables. Is there a way we can reduce this time or can improve the performance ?. People. table_name. When you drop a 'Managed' table hive will also trash its data. The MSCK REPAIR TABLE command was designed to manually add partitions that are added to or removed from the file system, such as HDFS or S3, but are not present in the metastore.
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