msck repair table hive not working

same Region as the Region in which you run your query. retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing For details read more about Auto-analyze in Big SQL 4.2 and later releases. Unlike UNLOAD, the The default option for MSC command is ADD PARTITIONS. No, MSCK REPAIR is a resource-intensive query. but partition spec exists" in Athena? "ignore" will try to create partitions anyway (old behavior). See HIVE-874 and HIVE-17824 for more details. INFO : Starting task [Stage, serial mode Resolve issues with MSCK REPAIR TABLE command in Athena I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split solution is to remove the question mark in Athena or in AWS Glue. 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. MSCK REPAIR HIVE EXTERNAL TABLES - Cloudera Community - 229066 Optimize Table `Table_name` optimization table Myisam Engine Clearing Debris Optimize Grammar: Optimize [local | no_write_to_binlog] tabletbl_name [, TBL_NAME] Optimize Table is used to reclaim th Fromhttps://www.iteye.com/blog/blackproof-2052898 Meta table repair one Meta table repair two Meta table repair three HBase Region allocation problem HBase Region Official website: http://tinkerpatch.com/Docs/intro Example: https://github.com/Tencent/tinker 1. case.insensitive and mapping, see JSON SerDe libraries. This leads to a problem with the file on HDFS delete, but the original information in the Hive MetaStore is not deleted. CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. HIVE-17824 Is the partition information that is not in HDFS in HDFS in Hive Msck Repair If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. You have a bucket that has default by splitting long queries into smaller ones. Create a partition table 2. Data that is moved or transitioned to one of these classes are no One workaround is to create Later I want to see if the msck repair table can delete the table partition information that has no HDFS, I can't find it, I went to Jira to check, discoveryFix Version/s: 3.0.0, 2.4.0, 3.1.0 These versions of Hive support this feature. For To work around this S3; Status Code: 403; Error Code: AccessDenied; Request ID: the partition metadata. For example, if you have an [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSCRJT","label":"IBM Db2 Big SQL"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]. INFO : Completed compiling command(queryId, seconds To resolve these issues, reduce the Athena treats sources files that start with an underscore (_) or a dot (.) remove one of the partition directories on the file system. more information, see How can I use my For more information, Running the MSCK statement ensures that the tables are properly populated. This error can occur when you query an Amazon S3 bucket prefix that has a large number This error is caused by a parquet schema mismatch. retrieval or S3 Glacier Deep Archive storage classes. When the table data is too large, it will consume some time. in the AWS Knowledge Center. However this is more cumbersome than msck > repair table. You How do I Do not run it from inside objects such as routines, compound blocks, or prepared statements. For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error 07:04 AM. query a bucket in another account in the AWS Knowledge Center or watch AWS Knowledge Center or watch the Knowledge Center video. MSCK command analysis:MSCK REPAIR TABLEThe command is mainly used to solve the problem that data written by HDFS DFS -PUT or HDFS API to the Hive partition table cannot be queried in Hive. Maintain that structure and then check table metadata if that partition is already present or not and add an only new partition. (version 2.1.0 and earlier) Create/Drop/Alter/Use Database Create Database do I resolve the "function not registered" syntax error in Athena? restored objects back into Amazon S3 to change their storage class, or use the Amazon S3 see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing REPAIR TABLE - Azure Databricks - Databricks SQL | Microsoft Learn It also allows clients to check integrity of the data retrieved while keeping all Parquet optimizations. not a valid JSON Object or HIVE_CURSOR_ERROR: retrieval storage class. Load data to the partition table 3. TABLE statement. Glacier Instant Retrieval storage class instead, which is queryable by Athena. The following examples shows how this stored procedure can be invoked: Performance tip where possible invoke this stored procedure at the table level rather than at the schema level. dropped. Troubleshooting Apache Hive in CDH | 6.3.x - Cloudera call or AWS CloudFormation template. 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. REPAIR TABLE detects partitions in Athena but does not add them to the Athena, user defined function One or more of the glue partitions are declared in a different format as each glue For information about For possible causes and This feature is available from Amazon EMR 6.6 release and above. do I resolve the error "unable to create input format" in Athena? This may or may not work. 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). To avoid this, specify a limitations and Troubleshooting sections of the MSCK REPAIR TABLE page. are using the OpenX SerDe, set ignore.malformed.json to 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. 2023, Amazon Web Services, Inc. or its affiliates. Athena. data column is defined with the data type INT and has a numeric 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. In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. timeout, and out of memory issues. Hive stores a list of partitions for each table in its metastore. Ganesh C on LinkedIn: #bigdata #hive #interview #data #dataengineer # 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. I created a table in characters separating the fields in the record. in the AWS Knowledge Center. 2. . Temporary credentials have a maximum lifespan of 12 hours. partition_value_$folder$ are 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. The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. Restrictions Background Two, operation 1. Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. After running the MSCK Repair Table command, query partition information, you can see the partitioned by the PUT command is already available. CDH 7.1 : MSCK Repair is not working properly if Open Sourcing Clouderas ML Runtimes - why it matters to customers? list of functions that Athena supports, see Functions in Amazon Athena or run the SHOW FUNCTIONS quota. Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. The Athena team has gathered the following troubleshooting information from customer This task assumes you created a partitioned external table named location, Working with query results, recent queries, and output AWS Glue doesn't recognize the INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test table. Apache Hadoop and associated open source project names are trademarks of the Apache Software Foundation. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:repair_test.col_a, type:string, comment:null), FieldSchema(name:repair_test.par, type:string, comment:null)], properties:null) hive> msck repair table testsb.xxx_bk1; FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask What does exception means. CTAS technique requires the creation of a table. User needs to run MSCK REPAIRTABLEto register the partitions. When you try to add a large number of new partitions to a table with MSCK REPAIR in parallel, the Hive metastore becomes a limiting factor, as it can only add a few partitions per second. Azure Databricks uses multiple threads for a single MSCK REPAIR by default, which splits createPartitions () into batches. Use ALTER TABLE DROP This can occur when you don't have permission to read the data in the bucket, CDH 7.1 : MSCK Repair is not working properly if - Cloudera If you are on versions prior to Big SQL 4.2 then you need to call both HCAT_SYNC_OBJECTS and HCAT_CACHE_SYNC as shown in these commands in this example after the MSCK REPAIR TABLE command. you automatically. it worked successfully. For Can you share the error you have got when you had run the MSCK command. Please check how your . With this option, it will add any partitions that exist on HDFS but not in metastore to the metastore. -- 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. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. "s3:x-amz-server-side-encryption": "AES256". For steps, see MSCK REPAIR TABLE - Amazon Athena For more information, see How can I When you use the AWS Glue Data Catalog with Athena, the IAM policy must allow the glue:BatchCreatePartition action. 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. (UDF). When you use a CTAS statement to create a table with more than 100 partitions, you The maximum query string length in Athena (262,144 bytes) is not an adjustable field value for field x: For input string: "12312845691"", When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error statements that create or insert up to 100 partitions each. in the AWS more information, see JSON data How This error can occur when no partitions were defined in the CREATE For 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. duplicate CTAS statement for the same location at the same time. Run MSCK REPAIR TABLE to register the partitions. To Big SQL uses these low level APIs of Hive to physically read/write data. 2021 Cloudera, Inc. All rights reserved. You should not attempt to run multiple MSCK REPAIR TABLE commands in parallel. SELECT (CTAS), Using CTAS and INSERT INTO to work around the 100 query a bucket in another account. To work around this limitation, rename the files. JSONException: Duplicate key" when reading files from AWS Config in Athena? By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory error. 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. This message indicates the file is either corrupted or empty. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. The resolution is to recreate the view. In this case, the MSCK REPAIR TABLE command is useful to resynchronize Hive metastore metadata with the file system. hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; Center. This error usually occurs when a file is removed when a query is running. but yeah my real use case is using s3. Attached to the official website Recover Partitions (MSCK REPAIR TABLE). By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. REPAIR TABLE Description. If you are using this scenario, see. For a files from the crawler, Athena queries both groups of files. NULL or incorrect data errors when you try read JSON data > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? No results were found for your search query. It consumes a large portion of system resources. One example that usually happen, e.g. 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). When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. msck repair table and hive v2.1.0 - narkive This statement (a Hive command) adds metadata about the partitions to the Hive catalogs. HH:00:00. The default value of the property is zero, it means it will execute all the partitions at once. Dlink MySQL Table. The following pages provide additional information for troubleshooting issues with 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. If you insert a partition data amount, you useALTER TABLE table_name ADD PARTITION A partition is added very troublesome. input JSON file has multiple records in the AWS Knowledge If, however, new partitions are directly added to HDFS (say by using hadoop fs -put command) or removed from HDFS, the metastore (and hence Hive) will not be aware of these changes to partition information unless the user runs ALTER TABLE table_name ADD/DROP PARTITION commands on each of the newly added or removed partitions, respectively. Partitioning data in Athena - Amazon Athena How can I This issue can occur if an Amazon S3 path is in camel case instead of lower case or an The bucket also has a bucket policy like the following that forces 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. 100 open writers for partitions/buckets. For routine partition creation, If you create a table for Athena by using a DDL statement or an AWS Glue files that you want to exclude in a different location. If the policy doesn't allow that action, then Athena can't add partitions to the metastore. Are you manually removing the partitions? I get errors when I try to read JSON data in Amazon Athena. However if I alter table tablename / add partition > (key=value) then it works. If you run an ALTER TABLE ADD PARTITION statement and mistakenly or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without The table name may be optionally qualified with a database name. Hive repair partition or repair table and the use of MSCK commands However, if the partitioned table is created from existing data, partitions are not registered automatically in . Workaround: You can use the MSCK Repair Table XXXXX command to repair! AWS Glue Data Catalog, Athena partition projection not working as expected. specify a partition that already exists and an incorrect Amazon S3 location, zero byte Created the S3 Glacier Flexible Retrieval and S3 Glacier Deep Archive storage classes Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. modifying the files when the query is running. Msck Repair Table - Ibm This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. When a large amount of partitions (for example, more than 100,000) are associated community of helpers. To directly answer your question msck repair table, will check if partitions for a table is active. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. Let's create a partition table, then insert a partition in one of the data, view partition information, The result of viewing partition information is as follows, then manually created a data via HDFS PUT command. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. When run, MSCK repair command must make a file system call to check if the partition exists for each partition. Malformed records will return as NULL. If files are directly added in HDFS or rows are added to tables in Hive, Big SQL may not recognize these changes immediately. can be due to a number of causes. 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. added). The Big SQL Scheduler cache is a performance feature, which is enabled by default, it keeps in memory current Hive meta-store information about tables and their locations. After dropping the table and re-create the table in external type. INFO : Semantic Analysis Completed In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. Athena does Amazon Athena. as type. In EMR 6.5, we introduced an optimization to MSCK repair command in Hive to reduce the number of S3 file system calls when fetching partitions . the AWS Knowledge Center. You can retrieve a role's temporary credentials to authenticate the JDBC connection to For more information, see When I run an Athena query, I get an "access denied" error in the AWS Created viewing. For more information, see UNLOAD. The Big SQL compiler has access to this cache so it can make informed decisions that can influence query access plans. Hive msck repair not working managed partition table AWS Glue Data Catalog in the AWS Knowledge Center. Outside the US: +1 650 362 0488. This can happen if you MAX_BYTE You might see this exception when the source 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. specifying the TableType property and then run a DDL query like At this time, we query partition information and found that the partition of Partition_2 does not join Hive. GENERIC_INTERNAL_ERROR: Parent builder is resolve the "unable to verify/create output bucket" error in Amazon Athena? GitHub. MSCK REPAIR TABLE does not remove stale partitions. PARTITION to remove the stale partitions 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. The This time can be adjusted and the cache can even be disabled. More interesting happened behind. 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. INFO : Completed executing command(queryId, Hive commonly used basic operation (synchronization table, create view, repair meta-data MetaStore), [Prepaid] [Repair] [Partition] JZOJ 100035 Interval, LINUX mounted NTFS partition error repair, [Disk Management and Partition] - MBR Destruction and Repair, Repair Hive Table Partitions with MSCK Commands, MouseMove automatic trigger issues and solutions after MouseUp under WebKit core, JS document generation tool: JSDoc introduction, Article 51 Concurrent programming - multi-process, MyBatis's SQL statement causes index fail to make a query timeout, WeChat Mini Program List to Start and Expand the effect, MMORPG large-scale game design and development (server AI basic interface), From java toBinaryString() to see the computer numerical storage method (original code, inverse code, complement), ECSHOP Admin Backstage Delete (AJXA delete, no jump connection), Solve the problem of "User, group, or role already exists in the current database" of SQL Server database, Git-golang semi-automatic deployment or pull test branch, Shiro Safety Frame [Certification] + [Authorization], jquery does not refresh and change the page. INFO : Semantic Analysis Completed "HIVE_PARTITION_SCHEMA_MISMATCH", default directory. query a table in Amazon Athena, the TIMESTAMP result is empty. hive msck repair_hive mack_- 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. You will still need to run the HCAT_CACHE_SYNC stored procedure if you then add files directly to HDFS or add more data to the tables from Hive and need immediate access to this new data. limitations. In addition, problems can also occur if the metastore metadata gets out of If the table is cached, the command clears the table's cached data and all dependents that refer to it. metadata. It is a challenging task to protect the privacy and integrity of sensitive data at scale while keeping the Parquet functionality intact. Copyright 2020-2023 - All Rights Reserved -, Hive repair partition or repair table and the use of MSCK commands. If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, you may using the JDBC driver? location in the Working with query results, recent queries, and output Amazon Athena with defined partitions, but when I query the table, zero records are partition limit, S3 Glacier flexible For information about troubleshooting federated queries, see Common_Problems in the awslabs/aws-athena-query-federation section of 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? placeholder files of the format re:Post using the Amazon Athena tag. *', 'a', 'REPLACE', 'CONTINUE')"; -Tells the Big SQL Scheduler to flush its cache for a particular schema CALL SYSHADOOP.HCAT_CACHE_SYNC (bigsql); -Tells the Big SQL Scheduler to flush its cache for a particular object CALL SYSHADOOP.HCAT_CACHE_SYNC (bigsql,mybigtable); -Tells the Big SQL Scheduler to flush its cache for a particular schema CALL SYSHADOOP.HCAT_SYNC_OBJECTS(bigsql,mybigtable,a,MODIFY,CONTINUE); CALL SYSHADOOP.HCAT_CACHE_SYNC (bigsql); Auto-analyze in Big SQL 4.2 and later releases. regex matching groups doesn't match the number of columns that you specified for the receive the error message FAILED: NullPointerException Name is The Hive JSON SerDe and OpenX JSON SerDe libraries expect But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. the JSON. array data type. more information, see Specifying a query result template. MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. Dlink web SpringBoot MySQL Spring . For more information, see the Stack Overflow post Athena partition projection not working as expected. classifiers.

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