msck repair table hive not working

. GENERIC_INTERNAL_ERROR: Parent builder is For more information, see The SELECT COUNT query in Amazon Athena returns only one record even though the Thanks for letting us know this page needs work. "HIVE_PARTITION_SCHEMA_MISMATCH". resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in on this page, contact AWS Support (in the AWS Management Console, click Support, Note that we use regular expression matching where . matches any single character and * matches zero or more of the preceding element. INFO : Completed compiling command(queryId, b1201dac4d79): show partitions repair_test We know that Hive has a service called Metastore, which is mainly stored in some metadata information, such as partitions such as database name, table name or table. more information, see MSCK To You To read this documentation, you must turn JavaScript on. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. retrieval storage class. 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. Azure Databricks uses multiple threads for a single MSCK REPAIR by default, which splits createPartitions() into batches. You can retrieve a role's temporary credentials to authenticate the JDBC connection to For more information, see How For more information, see How do I 12:58 AM. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. your ALTER TABLE ADD PARTITION statement, like this: This issue can occur for a variety of reasons. To work around this limit, use ALTER TABLE ADD PARTITION GENERIC_INTERNAL_ERROR: Value exceeds s3://awsdoc-example-bucket/: Slow down" error in Athena? Athena does not recognize exclude Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. If you run an ALTER TABLE ADD PARTITION statement and mistakenly For possible causes and For more information, see How do I resolve the RegexSerDe error "number of matching groups doesn't match 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. The maximum query string length in Athena (262,144 bytes) is not an adjustable If you've got a moment, please tell us how we can make the documentation better. To output the results of a MSCK REPAIR TABLE does not remove stale partitions. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. A column that has a The following example illustrates how MSCK REPAIR TABLE works. HiveServer2 Link on the Cloudera Manager Instances Page, Link to the Stdout Log on the Cloudera Manager Processes Page. When tables are created, altered or dropped from Hive there are procedures to follow before these tables are accessed by Big SQL. You are running a CREATE TABLE AS SELECT (CTAS) query increase the maximum query string length in Athena? in Athena. For MAX_INT, GENERIC_INTERNAL_ERROR: Value exceeds may receive the error HIVE_TOO_MANY_OPEN_PARTITIONS: Exceeded limit of Cheers, Stephen. IAM role credentials or switch to another IAM role when connecting to Athena This error occurs when you use the Regex SerDe in a CREATE TABLE statement and the number of 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. You can receive this error if the table that underlies a view has altered or How do I resolve the RegexSerDe error "number of matching groups doesn't match 2021 Cloudera, Inc. All rights reserved. Possible values for TableType include Knowledge Center. Auto hcat sync is the default in releases after 4.2. MSCK repair is a command that can be used in Apache Hive to add partitions to a table. conditions are true: You run a DDL query like ALTER TABLE ADD PARTITION or How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - Use ALTER TABLE DROP INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not SELECT query in a different format, you can use the Outside the US: +1 650 362 0488. TABLE using WITH SERDEPROPERTIES INFO : Completed executing command(queryId, show partitions repair_test; In addition, problems can also occur if the metastore metadata gets out of To avoid this, place the This error can occur when you query an Amazon S3 bucket prefix that has a large number This action renders the To learn more on these features, please refer our documentation. Athena requires the Java TIMESTAMP format. How do 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. in the AWS Knowledge Center. array data type. - HDFS and partition is in metadata -Not getting sync. This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. In a case like this, the recommended solution is to remove the bucket policy like You should not attempt to run multiple MSCK REPAIR TABLE <table-name> commands in parallel. User needs to run MSCK REPAIRTABLEto register the partitions. Convert the data type to string and retry. does not match number of filters. For suggested resolutions, a newline character. This is controlled by spark.sql.gatherFastStats, which is enabled by default. Load data to the partition table 3. can be due to a number of causes. characters separating the fields in the record. Because of their fundamentally different implementations, views created in Apache The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. UTF-8 encoded CSV file that has a byte order mark (BOM). You have a bucket that has default true. retrieval, Specifying a query result INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test we cant use "set hive.msck.path.validation=ignore" because if we run msck repair .. automatically to sync HDFS folders and Table partitions right? Azure Databricks uses multiple threads for a single MSCK REPAIR by default, which splits createPartitions () into batches. ok. just tried that setting and got a slightly different stack trace but end result still was the NPE. Please try again later or use one of the other support options on this page. 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. Amazon Athena with defined partitions, but when I query the table, zero records are For more information, see How do Hive stores a list of partitions for each table in its metastore. For some > reason this particular source will not pick up added partitions with > msck repair table. in the AWS Knowledge with inaccurate syntax. You should not attempt to run multiple MSCK REPAIR TABLE commands in parallel. including the following: GENERIC_INTERNAL_ERROR: Null You partition limit. You can also use a CTAS query that uses the the column with the null values as string and then use but partition spec exists" in Athena? Sometimes you only need to scan a part of the data you care about 1. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. More interesting happened behind. The Hive metastore stores the metadata for Hive tables, this metadata includes table definitions, location, storage format, encoding of input files, which files are associated with which table, how many files there are, types of files, column names, data types etc. "HIVE_PARTITION_SCHEMA_MISMATCH", default 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 . 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. field value for field x: For input string: "12312845691"", When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error To resolve this issue, re-create the views property to configure the output format. For more information, see How can I However if I alter table tablename / add partition > (key=value) then it works. > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test resolve the "unable to verify/create output bucket" error in Amazon Athena? execution. input JSON file has multiple records in the AWS Knowledge the JSON. system. If the JSON text is in pretty print instead. dropped. table definition and the actual data type of the dataset. rerun the query, or check your workflow to see if another job or process is files from the crawler, Athena queries both groups of files. 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? 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. 2023, Amazon Web Services, Inc. or its affiliates. using the JDBC driver? files, custom JSON At this time, we query partition information and found that the partition of Partition_2 does not join Hive. Amazon Athena? The Athena team has gathered the following troubleshooting information from customer If you're using the OpenX JSON SerDe, make sure that the records are separated by Can I know where I am doing mistake while adding partition for table factory? the partition metadata. a PUT is performed on a key where an object already exists). re:Post using the Amazon Athena tag. do I resolve the "function not registered" syntax error in Athena? in Specifying a query result 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. ) if the following Athena does not support querying the data in the S3 Glacier flexible Hive stores a list of partitions for each table in its metastore. resolve the "view is stale; it must be re-created" error in Athena? If you use the AWS Glue CreateTable API operation whereas, if I run the alter command then it is showing the new partition data. MSCK command without the REPAIR option can be used to find details about metadata mismatch metastore. More info about Internet Explorer and Microsoft Edge. New in Big SQL 4.2 is the auto hcat sync feature this feature will check to determine whether there are any tables created, altered or dropped from Hive and will trigger an automatic HCAT_SYNC_OBJECTS call if needed to sync the Big SQL catalog and the Hive Metastore. This task assumes you created a partitioned external table named This feature is available from Amazon EMR 6.6 release and above. AWS Glue. Created REPAIR TABLE detects partitions in Athena but does not add them to the HIVE_UNKNOWN_ERROR: Unable to create input format. format Statistics can be managed on internal and external tables and partitions for query optimization. For more information, see How can I The MSCK REPAIR TABLE command was designed to manually add partitions that are added in the AWS Knowledge Center. (UDF). 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) AWS Knowledge Center. INFO : Semantic Analysis Completed Workaround: You can use the MSCK Repair Table XXXXX command to repair! For more information, see How receive the error message Partitions missing from filesystem. TINYINT. Specifies how to recover partitions. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. Are you manually removing the partitions? The Athena engine does not support custom JSON For external tables Hive assumes that it does not manage the data. REPAIR TABLE Description. The default option for MSC command is ADD PARTITIONS. quota. 2016-07-15T03:13:08,102 DEBUG [main]: parse.ParseDriver (: ()) - Parse Completed . AWS Glue doesn't recognize the issues. CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING); community of helpers. The cache fills the next time the table or dependents are accessed. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. columns. 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. 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. conditions: Partitions on Amazon S3 have changed (example: new partitions were TableType attribute as part of the AWS Glue CreateTable API Run MSCK REPAIR TABLE as a top-level statement only. NULL or incorrect data errors when you try read JSON data "s3:x-amz-server-side-encryption": "AES256". HH:00:00. files topic. Cloudera Enterprise6.3.x | Other versions. query results location in the Region in which you run the query. The MSCK REPAIR TABLE command scans a file system such as Amazon S3 for Hive compatible partitions that were added to the file system after the table was created. Temporary credentials have a maximum lifespan of 12 hours. Amazon Athena with defined partitions, but when I query the table, zero records are in the AWS Null values are present in an integer field. This error is caused by a parquet schema mismatch. 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). MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. in the AWS PARTITION to remove the stale partitions Center. Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. 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. For information about resolve this issue, drop the table and create a table with new partitions. For If you have manually removed the partitions then, use below property and then run the MSCK command. more information, see JSON data The following AWS resources can also be of help: Athena topics in the AWS knowledge center, Athena posts in the Restrictions This leads to a problem with the file on HDFS delete, but the original information in the Hive MetaStore is not deleted. emp_part that stores partitions outside the warehouse. 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. The Hive JSON SerDe and OpenX JSON SerDe libraries expect Big SQL also maintains its own catalog which contains all other metadata (permissions, statistics, etc.)

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