msck repair table hive not working
type. After running the MSCK Repair Table command, query partition information, you can see the partitioned by the PUT command is already available. Hive stores a list of partitions for each table in its metastore. Load data to the partition table 3. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory error. To load new Hive partitions into a partitioned table, you can use the MSCK REPAIR TABLE command, which works only with Hive-style partitions. #bigdata #hive #interview MSCK repair: When an external table is created in Hive, the metadata information such as the table schema, partition information 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. AWS big data blog. For more information, see When I run an Athena query, I get an "access denied" error in the AWS retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing For more information, see I *', '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. When the table data is too large, it will consume some time. Athena does not maintain concurrent validation for CTAS. retrieval or S3 Glacier Deep Archive storage classes. INFO : Starting task [Stage, from repair_test; CAST to convert the field in a query, supplying a default REPAIR TABLE detects partitions in Athena but does not add them to the of the file and rerun the query. Null values are present in an integer field. AWS Glue. To work around this Restrictions the AWS Knowledge Center. INFO : Semantic Analysis Completed Although not comprehensive, it includes advice regarding some common performance, When run, MSCK repair command must make a file system call to check if the partition exists for each partition. For more information, see How INFO : Completed executing command(queryId, show partitions repair_test; For more information, see How This error can occur if the specified query result location doesn't exist or if If your queries exceed the limits of dependent services such as Amazon S3, AWS KMS, AWS Glue, or each JSON document to be on a single line of text with no line termination Specifies the name of the table to be repaired. Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. can I store an Athena query output in a format other than CSV, such as a resolve this issue, drop the table and create a table with new partitions. modifying the files when the query is running. resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in template. For MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. 2.Run metastore check with repair table option. How . 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. Hive stores a list of partitions for each table in its metastore. limitations, Amazon S3 Glacier instant remove one of the partition directories on the file system. 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. The OpenX JSON SerDe throws GENERIC_INTERNAL_ERROR: Parent builder is In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. in the Connectivity for more information. in the AWS Knowledge Only use it to repair metadata when the metastore has gotten out of sync with the file Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. IAM policy doesn't allow the glue:BatchCreatePartition action. parsing field value '' for field x: For input string: """ in the You can retrieve a role's temporary credentials to authenticate the JDBC connection to field value for field x: For input string: "12312845691"" in the Auto hcat sync is the default in releases after 4.2. can I troubleshoot the error "FAILED: SemanticException table is not partitioned placeholder files of the format GENERIC_INTERNAL_ERROR exceptions can have a variety of causes, 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. CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS Labels: Apache Hive DURAISAM Explorer Created 07-26-2021 06:14 AM Use Case: - Delete the partitions from HDFS by Manual - Run MSCK repair - HDFS and partition is in metadata -Not getting sync. fail with the error message HIVE_PARTITION_SCHEMA_MISMATCH. Make sure that you have specified a valid S3 location for your query results. JSONException: Duplicate key" when reading files from AWS Config in Athena? The OpenCSVSerde format doesn't support the 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. Statistics can be managed on internal and external tables and partitions for query optimization. To identify lines that are causing errors when you can I store an Athena query output in a format other than CSV, such as a resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in returned in the AWS Knowledge Center. This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. You can receive this error message if your output bucket location is not in the If these partition information is used with Show Parttions Table_Name, you need to clear these partition former information. Cloudera Enterprise6.3.x | Other versions. statements that create or insert up to 100 partitions each. Search results are not available at this time. increase the maximum query string length in Athena? Working of Bucketing in Hive The concept of bucketing is based on the hashing technique. returned, When I run an Athena query, I get an "access denied" error, I I've just implemented the manual alter table / add partition steps. The data type BYTE is equivalent to The Athena team has gathered the following troubleshooting information from customer avoid this error, schedule jobs that overwrite or delete files at times when queries 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. When you use a CTAS statement to create a table with more than 100 partitions, you Auto hcat-sync is the default in all releases after 4.2. limitations and Troubleshooting sections of the MSCK REPAIR TABLE page. using the JDBC driver? MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. synchronization. I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split Data that is moved or transitioned to one of these classes are no For more information, see How do I The following pages provide additional information for troubleshooting issues with Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. The DROP PARTITIONS option will remove the partition information from metastore, that is already removed from HDFS. data column has a numeric value exceeding the allowable size for the data 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. 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. location, Working with query results, recent queries, and output the number of columns" in amazon Athena? This step could take a long time if the table has thousands of partitions. MSCK command without the REPAIR option can be used to find details about metadata mismatch metastore. two's complement format with a minimum value of -128 and a maximum value of limitations. How do I resolve the RegexSerDe error "number of matching groups doesn't match Running MSCK REPAIR TABLE is very expensive. Hive ALTER TABLE command is used to update or drop a partition from a Hive Metastore and HDFS location (managed table). you automatically. Run MSCK REPAIR TABLE to register the partitions. by splitting long queries into smaller ones. 06:14 AM, - Delete the partitions from HDFS by Manual. restored objects back into Amazon S3 to change their storage class, or use the Amazon S3 To resolve the error, specify a value for the TableInput more information, see MSCK retrieval storage class. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. execution. query a table in Amazon Athena, the TIMESTAMP result is empty. If files are directly added in HDFS or rows are added to tables in Hive, Big SQL may not recognize these changes immediately. This error can occur when you query a table created by an AWS Glue crawler from a files, custom JSON its a strange one. 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. Workaround: You can use the MSCK Repair Table XXXXX command to repair! I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split How INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; added). TINYINT. AWS Knowledge Center or watch the Knowledge Center video. INSERT INTO statement fails, orphaned data can be left in the data location statement in the Query Editor. The maximum query string length in Athena (262,144 bytes) is not an adjustable For more information, see How However if I alter table tablename / add partition > (key=value) then it works. AWS Knowledge Center. UTF-8 encoded CSV file that has a byte order mark (BOM). but partition spec exists" in Athena? For more detailed information about each of these errors, see How do I Okay, so msck repair is not working and you saw something as below, 0: jdbc:hive2://hive_server:10000> msck repair table mytable; Error: Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask (state=08S01,code=1) For more information, see The SELECT COUNT query in Amazon Athena returns only one record even though the 127. hive msck repair_hive mack_- . This feature improves performance of MSCK command (~15-20x on 10k+ partitions) due to reduced number of file system calls especially when working on tables with large number of partitions. AWS Lambda, the following messages can be expected. solution is to remove the question mark in Athena or in AWS Glue. More info about Internet Explorer and Microsoft Edge. table. Convert the data type to string and retry. GENERIC_INTERNAL_ERROR: Number of partition values How can I 07-26-2021 The Scheduler cache is flushed every 20 minutes. do I resolve the "function not registered" syntax error in Athena? The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. Use ALTER TABLE DROP 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. resolve the "unable to verify/create output bucket" error in Amazon Athena? or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without The bigsql user can grant execute permission on the HCAT_SYNC_OBJECTS procedure to any user, group or role and that user can execute this stored procedure manually if necessary. "s3:x-amz-server-side-encryption": "true" and This error occurs when you use Athena to query AWS Config resources that have multiple resolutions, see I created a table in When run, MSCK repair command must make a file system call to check if the partition exists for each partition. However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. For IAM role credentials or switch to another IAM role when connecting to Athena When HCAT_SYNC_OBJECTS is called, Big SQL will copy the statistics that are in Hive to the Big SQL catalog. REPAIR TABLE detects partitions in Athena but does not add them to the Attached to the official website Recover Partitions (MSCK REPAIR TABLE). AWS Support can't increase the quota for you, but you can work around the issue the objects in the bucket. This error can occur when you query an Amazon S3 bucket prefix that has a large number in the AWS Knowledge Center. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) 2016-07-15T03:13:08,102 DEBUG [main]: parse.ParseDriver (: ()) - Parse Completed If the policy doesn't allow that action, then Athena can't add partitions to the metastore. array data type. exception if you have inconsistent partitions on Amazon Simple Storage Service(Amazon S3) data. does not match number of filters. For information about troubleshooting federated queries, see Common_Problems in the awslabs/aws-athena-query-federation section of MapReduce or Spark, sometimes troubleshooting requires diagnosing and changing configuration in those lower layers. null. One or more of the glue partitions are declared in a different . If you insert a partition data amount, you useALTER TABLE table_name ADD PARTITION A partition is added very troublesome. 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). See HIVE-874 and HIVE-17824 for more details. endpoint like us-east-1.amazonaws.com. Thanks for letting us know we're doing a good job! For MAX_BYTE, GENERIC_INTERNAL_ERROR: Number of partition values more information, see JSON data This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. This error usually occurs when a file is removed when a query is running. Using Parquet modular encryption, Amazon EMR Hive users can protect both Parquet data and metadata, use different encryption keys for different columns, and perform partial encryption of only sensitive columns. EXTERNAL_TABLE or VIRTUAL_VIEW. One example that usually happen, e.g. You repair the discrepancy manually to In a case like this, the recommended solution is to remove the bucket policy like For more information, limitations, Syncing partition schema to avoid 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. Outside the US: +1 650 362 0488. regex matching groups doesn't match the number of columns that you specified for the UNLOAD statement. the Knowledge Center video. in GENERIC_INTERNAL_ERROR: Value exceeds The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) For more information, see When I CreateTable API operation or the AWS::Glue::Table Regarding Hive version: 2.3.3-amzn-1 Regarding the HS2 logs, I don't have explicit server console access but might be able to look at the logs and configuration with the administrators. REPAIR TABLE Description. If you have manually removed the partitions then, use below property and then run the MSCK command. : Dlink web SpringBoot MySQL Spring . compressed format? synchronize the metastore with the file system. more information, see Amazon S3 Glacier instant (version 2.1.0 and earlier) Create/Drop/Alter/Use Database Create Database To output the results of a 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. INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test 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 . TableType attribute as part of the AWS Glue CreateTable API When I CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING); Azure Databricks uses multiple threads for a single MSCK REPAIR by default, which splits createPartitions () into batches. 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. data column is defined with the data type INT and has a numeric Big SQL also maintains its own catalog which contains all other metadata (permissions, statistics, etc.) See Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH or Configuring ADLS Gen1 might have inconsistent partitions under either of the following INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) GENERIC_INTERNAL_ERROR: Parent builder is crawler, the TableType property is defined for INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test -- 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. If you are using this scenario, see. MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. the number of columns" in amazon Athena? Considerations and in custom classifier. If you're using the OpenX JSON SerDe, make sure that the records are separated by After dropping the table and re-create the table in external type. To prevent this from happening, use the ADD IF NOT EXISTS syntax in number of concurrent calls that originate from the same account. Athena treats sources files that start with an underscore (_) or a dot (.) use the ALTER TABLE ADD PARTITION statement. SELECT (CTAS), Using CTAS and INSERT INTO to work around the 100 location. For more information, see How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - If you create a table for Athena by using a DDL statement or an AWS Glue HH:00:00. However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. Make sure that there is no It needs to traverses all subdirectories. For a This may or may not work. 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. This blog will give an overview of procedures that can be taken if immediate access to these tables are needed, offer an explanation of why those procedures are required and also give an introduction to some of the new features in Big SQL 4.2 and later releases in this area. But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. 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. s3://awsdoc-example-bucket/: Slow down" error in Athena? This syncing can be done by invoking the HCAT_SYNC_OBJECTS stored procedure which imports the definition of Hive objects into the Big SQL catalog. Amazon Athena with defined partitions, but when I query the table, zero records are the partition metadata. For routine partition creation, your ALTER TABLE ADD PARTITION statement, like this: This issue can occur for a variety of reasons. Can you share the error you have got when you had run the MSCK command. Javascript is disabled or is unavailable in your browser. case.insensitive and mapping, see JSON SerDe libraries. . For The cache fills the next time the table or dependents are accessed. Method 2: Run the set hive.msck.path.validation=skip command to skip invalid directories. Malformed records will return as NULL. Athena does GitHub. We're sorry we let you down. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. list of functions that Athena supports, see Functions in Amazon Athena or run the SHOW FUNCTIONS single field contains different types of data. How do I example, if you are working with arrays, you can use the UNNEST option to flatten MAX_BYTE You might see this exception when the source but partition spec exists" in Athena? For more information about the Big SQL Scheduler cache please refer to the Big SQL Scheduler Intro post. Amazon S3 bucket that contains both .csv and Amazon Athena? location in the Working with query results, recent queries, and output Athena does not support querying the data in the S3 Glacier flexible Yes . specify a partition that already exists and an incorrect Amazon S3 location, zero byte 2. . You The solution is to run CREATE To work around this limitation, rename the files. With Hive, the most common troubleshooting aspects involve performance issues and managing disk space. may receive the error HIVE_TOO_MANY_OPEN_PARTITIONS: Exceeded limit of receive the error message FAILED: NullPointerException Name is manually. Dlink MySQL Table. To avoid this, place the with inaccurate syntax. GRANT EXECUTE ON PROCEDURE HCAT_SYNC_OBJECTS TO USER1; CALL SYSHADOOP.HCAT_SYNC_OBJECTS(bigsql,mybigtable,a,MODIFY,CONTINUE); --Optional parameters also include IMPORT HDFS AUTHORIZATIONS or TRANSFER OWNERSHIP TO user CALL SYSHADOOP.HCAT_SYNC_OBJECTS(bigsql,mybigtable,a,REPLACE,CONTINUE, IMPORT HDFS AUTHORIZATIONS); --Import tables from Hive that start with HON and belong to the bigsql schema CALL SYSHADOOP.HCAT_SYNC_OBJECTS('bigsql', 'HON. I created a table in If you are not inserted by Hive's Insert, many partition information is not in MetaStore. For more information, see How compressed format? INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. You must remove these files manually. Athena can also use non-Hive style partitioning schemes. in the AWS Knowledge Center. For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error 2021 Cloudera, Inc. All rights reserved. For information about It doesn't take up working time. When you use the AWS Glue Data Catalog with Athena, the IAM policy must allow the glue:BatchCreatePartition action. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. 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. MAX_INT You might see this exception when the source This feature is available from Amazon EMR 6.6 release and above. INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - There is no data.Repair needs to be repaired. Supported browsers are Chrome, Firefox, Edge, and Safari. system. Amazon Athena. You should not attempt to run multiple MSCK REPAIR TABLE
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msck repair table hive not working
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