msck repair table hive not working

Query successful. [HIVE-24200] MSCK repair table is not working - ASF JIRA Как заставить MSCK REPAIR TABLE выполняться автоматически в AWS Athena The landing table only has one day's worth of data and shouldn't have more than ~500 partitions, so msck repair table should complete in a few seconds. . The following query creates a table named employee using the above data. Hive常用命令之msck Repair Table命令简述 - 简书 By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. |_month=3. Hive分区修复命令MSCK介绍与使用 - 过往记忆 People. 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. msck repair table is used to add partitions that exist in HDFS but not in the hive metastore. |_month=3. 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. This may or may not work. Q&A for work. Hive stores a list of partitions for each table in its metastore. Just performing an ALTER TABLE DROP PARTITION statement does remove the partition information from the metastore only. When I write parquet with custom partitioning like this: . Hive MSCK repair - Cloudera Community - 245173 Using partitions, we can query the portion of the data. 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. External table files can be accessed and managed by processes outside of Hive. You can either load all partitions or load them individually. Hive; HIVE-13703 "msck repair" on table with non-partition subdirectories reporting partitions not in metastore. > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? MSCK REPAIR TABLE taking more time The MSCK REPAIR TABLEcommand scans a file system such as Amazon S3 for Hive compatible partitions that were added to the file system after the table was created. Let us create an external table using the keyword "EXTERNAL" with the below command. hive Archives - adhocshare FSCK REPAIR TABLE. Export. Thread Thread Thread Thread Thread Thread Thread-208]: reexec.ReOptimizePlugin (:()) - ReOptimization: retryPossible: false Thread-208]: hooks.HiveProtoLoggingHook . When there is a large number of untracked partitions, there is a provision to run MSCK REPAIR TABLE batch wise to avoid OOME. Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH | 6.2 ... ALTER TABLE ADD PARTITION in Hive. In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. export count1=$(beeline -u . msck repair table and hive v2.1.0 - narkive |_day=5. How to run hive query in shell script and store the results in variable ... That is, all the data in the files still exists on the file system, it's jut that Hive no longer knows that it's . (. Notice the partition name prefixed with the partition. All of the answers so far are half right. Resolve issues with MSCK REPAIR TABLE command in Athena If the structure or partitioning of an external table is changed, an MSCK REPAIR TABLE table_name statement can be used to refresh metadata information. Hi All, We are running BDM/DEI mapping in blaze engine (10.4.1 version). 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 . Issue Links. External Tables with Custom Directory Schemes. HIVE-14798 MSCK REPAIR TABLE throws null pointer exception. For partitions that are not Hive compatible, use ALTER TABLE ADD PARTITION to load the partitions so that you can query the data. . Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. External tables can access data stored in sources such as Azure Storage Volumes (ASV) or remote HDFS locations. Update Stats If you use the load all partitions (MSCK REPAIR TABLE) command, partitions must be in a format understood by Hive. Create empty partitions on hive till e.g. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. AWS Athena and S3 Partitioning - Blogger Comment. thanks, Stephen. External table files can be accessed and managed by processes outside of Hive. FSCK REPAIR TABLE | Databricks on AWS If the structure or partitioning of an external table is changed, an MSCK REPAIR TABLE table_name statement can be used to refresh metadata information. /bucket/year=2017/month=02/date=20 /bucket/year=2017/month=02/date=21 I have created an external table in Athena Hive msck repair not working managed partition table - Cloudera Run the distcp command to perform the data copy. Resolved; Activity. Set the property hive.msck.path.validation=ignore or to the value of 'skip' at the cluster level. spark-sql -e "msck repair table <tablename>". Assign More. duplicates. (PS: Querying by Hive will not work. hive> CREATE TABLE IF NOT EXISTS employee ( eid int, name String, salary String, destination String) COMMENT 'Employee details' ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' LINES TERMINATED BY '\n' STORED AS TEXTFILE; If you add the option IF NOT EXISTS, Hive . Reopen Issue. See HIVE-874 and HIVE-17824 for more details. You remove one of the partition directories on the file system. Managed vs. External Tables - Apache Hive - Apache Software Foundation Ensure the table is set to external, drop all partitions then run the table repair: alter table mytable_name set TBLPROPERTIES('EXTERNAL'='TRUE') alter table mytable_name drop if exists partition (`mypart_name` <> 'null'); msck repair table mytable_name; If msck repair throws an error, then run hive from the terminal as: hive --hiveconf hive . |. Querying hive metastore tables can provide more in depth details on the tables sitting in Hive. If your table has partitions, you need to load these partitions to be able to query data. This would provide the same functionality as Hive's MSCK REPAIR TABLE. hive> msck repair table meter_001; OK . This article is a collection of queries that probes Hive metastore configured with mysql to get details like list of transactional tables, etc. Create and work with one single Hive table which overarches on a HDFS folder constituting files of various structures. Create a shell script on the emr and run it every e.g. MSCK REPAIR TABLE 命令主要是用来解决通过hdfs dfs -put或者hdfs api写入hive分区表的数据在hive中无法被查询到的问题。. To fix this issue, you can run the following hive query before the "INSERT OVERWRITE" to recover the missing partition definitions: MSCK REPAIR TABLE partition_test; OK Partitions not in metastore: partition_test:p=p1 Repair: Added partition to metastore partition_test:p=p1 Time taken: 0.486 seconds, Fetched: 2 row (s) Hadoop | Hive. The delta table of the partition, mapped to hive, cannot be ... - GitHub ( Does not work on windows ) . Also Keep in mind that Hive is a big data warehouse. Edit. This could be one of the reasons, when you created the table as external table, the MSCK REPAIR worked as expected. Click to see full answer. |_day=5. However, it expects the partitioned field name to be included in the folder structure: year=2015. We can MSCK REPAIR command. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. Syntax FSCK REPAIR TABLE table_name [DRY RUN] Parameters. This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. We are also working on delivering an EBF to allow passing Hive properties to Blaze through the Hive connection string. How to get hive to recognise new partitions created ... - RStudio Community On the Configuration page, click the HiveServer2 scope. bigdata Archives - adhocshare Notice the partition name prefixed with the partition. After you create a table with partitions, run a subsequent query that consists of the MSCK REPAIR TABLE clause to refresh partition metadata, for example, MSCK REPAIR TABLE cloudfront_logs;. The time spent in msck repair table is proportional to the number of partitions. |. [HIVE-13703] "msck repair" on table with non-partition subdirectories ... hive - msck repair table query not working - Stack Overflow Answer (1 of 3): You can follow the below steps: Case 1: Running the hive query via beeline & saving the output to a variable in shell. But MSCK REPAIR TABLE command in the end is taking almost 40 minutes. 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). An Error Is Reported When msck repair table table_name Is Run on Hive ... Answer (1 of 3): A2A. Error executing MSCK REPAIR TABLE on external Hive table (Hive 2.3.6) However, it expects the partitioned field name to be included in the folder structure: year=2015. Avoid having any partition key that contains any special characters. HiveMetaStoreChecker throws NullPointerException when doing a MSCK REPAIR TABLE. [HIVE-14772] NPE when MSCK REPAIR - ASF JIRA However this is more cumbersome than msck > repair table. HIVE partitions adding not working as expected..pa ... - Cloudera Failure to execute Query MSCK REPAIR TABLE xxx ... CREATE TABLE - Amazon Athena Troubleshooting Apache Hive in CDH | 6.3.x | Cloudera Documentation |. The default value of the property is zero, it means it will execute all the partitions at once. HIVE-17824 是关于hive msck repair 增加清理metastore中已经不在hdfs上的分区信息 Identifies an existing Delta table. Hive configuration properties Sounds like magic is not it? CREATE EXTERNAL TABLE if not exists students. 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. Even though this Symlink stuff is hive thing, it works with Hive only if the data files are in text format, not parquet like it is here). ; Use Hive for this step of the mapping. January 14, 2022. [Hive] Alter Table/Partition/Column - Huawei Support Community An Error Is Reported When msck repair table table_name Is Run on Hive ... In addition, we can use the Alter table add partition command to add the new partitions for a table. Querying hive metastore tables can provide more in depth details on the tables sitting in Hive. Connect and share knowledge within a single location that is structured and easy to search. table_name. Related Tags MSCK Repair - Fixing Partitions in Hive Table - Analyticshut Ans 2: For an unpartitioned table, all the data of the table will be stored in a single directory/folder in HDFS. LanguageManual DDL - Apache Hive - Apache Software Foundation Repair partitions manually using MSCK repair - Cloudera Bye Omar "ignore" will try to create partitions anyway (old behavior). The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. If your table has defined partitions, the partitions might not yet be loaded into the AWS Glue Data Catalog or the internal Athena data catalog. External tables can access data stored in sources such as Azure Storage Volumes (ASV) or remote HDFS locations. This caused the msck repair command to fail, only aligning metastore data to the latter partition type. 'DEBUG' but yet i still am not seeing any smoking gun. . Assignee: Unassigned Reporter: Per Ullberg Votes: The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. This can happen when these files have been manually deleted. Resolve issues with Amazon Athena queries returning empty results Step 4. If you go over 500 partitions, it will still work, but it'll take more time. Is there a way we can reduce this time or can improve the performance ?. Add Hive procedure to recover (discover) partitions #174 30 minutes with the hive command MSCK repair table [tablename]. Usage msck repair table wont work if you have data in the . Parameters. How to drop partition in external table in hive - Quora This was a spike/investigation/research in my work with our current client (a bank), which is to compact HDFS (orc) files which would be persisted through a data ingestion service written in Spark streaming. msck repair table wont work if you have data in the . If you run in Hive execution mode you would need to pass on the following property hive.msck.path.validation=skip If you are running your mapping with Blaze then you need to pass on this property within the Hive connection string as blaze operates directly on the data and does not load the hive client properties. Troubleshooting Apache Hive in CDH it works for me all the time. Learn more . MSCK REPAIR TABLE - Refresh metadata information. Hive stores a list of partitions for each table in its metastore. Removes the file entries from the transaction log of a Delta table that can no longer be found in the underlying file system. What is transient_lastDdlTime in hive? - TreeHozz.com |. At the moment I don't know what caused the inversion, I asked the dev team and they also don't know. Hive "INSERT OVERWRITE" Does Not Remove Existing Data By the way, fixing this problem (by recreating the table with the partition order in the correct way) let msck repair to work correctly. This statement (a Hive command) adds metadata about the partitions to the Hive catalogs. HIVE常用命令之MSCK REPAIR TABLE命令简述_YiRan_Zhao的博客-程序员秘密 MSCK REPAIR TABLE - Amazon Athena 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. Use MSCK REPAIR TABLE or ALTER TABLE ADD PARTITION to load the partition information into the catalog. Let us see it in action. However if I alter table tablename / add partition > (key=value) then it works. When msck repair table table_name is run on Hive, the error message "FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask (state=08S01,code= Проблема в том, что после каждого прогона моего Spark batch, вновь сгенерированные данные хранящиеся в S3 не будут обнаружены Athena, если только я вручную не запущу запрос MSCK REPAIR TABLE. Roll_id Int, Class Int, Name String, Rank Int) Row format delimited fields terminated by ','. If, however, new partitions are directly added to HDFS (say by using hadoop fs -put command) or removed from HDFS . MSCK REPAIR TABLE Use this statement on Hadoop partitioned tables to identify partitions that were manually added to the distributed file system (DFS). Troubleshooting Apache Hive in CDH | 6.1.x | Cloudera Documentation When you use the AWS Glue Data Catalog with Athena, the IAM policy must allow the glue:BatchCreatePartition action. If new partitions are present in the S3 location that you specified when This statement does not apply to Delta Lake tables. This goes to the directory where the table is pointing to and then creates a tree of directories and subdirectories, check table metadata, and adds all missing partitions. msck repair table for custom partition names Step 5. Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. MSCK REPAIR TABLE (Databricks SQL) | Databricks on AWS

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