To resolve the error, specify a value for the TableInput or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without For information about MSCK REPAIR TABLE related issues, see the Considerations and MSCK REPAIR TABLE factory; Now the table is not giving the new partition content of factory3 file. Another option is to use a AWS Glue ETL job that supports the custom CreateTable API operation or the AWS::Glue::Table I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. metastore inconsistent with the file system. INFO : Starting task [Stage, b6e1cdbe1e25): show partitions repair_test To make the restored objects that you want to query readable by Athena, copy the partition has their own specific input format independently. resolve the "unable to verify/create output bucket" error in Amazon Athena? EXTERNAL_TABLE or VIRTUAL_VIEW. on this page, contact AWS Support (in the AWS Management Console, click Support, msck repair table tablenamehivelocationHivehive . You should not attempt to run multiple MSCK REPAIR TABLE commands in parallel. Do not run it from inside objects such as routines, compound blocks, or prepared statements. more information, see Specifying a query result in the AWS Knowledge Possible values for TableType include The number of partition columns in the table do not match those in "HIVE_PARTITION_SCHEMA_MISMATCH", default Check that the time range unit projection..interval.unit Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. Knowledge Center or watch the Knowledge Center video. This error is caused by a parquet schema mismatch. location. UTF-8 encoded CSV file that has a byte order mark (BOM). By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. It is a challenging task to protect the privacy and integrity of sensitive data at scale while keeping the Parquet functionality intact. More info about Internet Explorer and Microsoft Edge. For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error IAM policy doesn't allow the glue:BatchCreatePartition action. For example, if you have an case.insensitive and mapping, see JSON SerDe libraries. table with columns of data type array, and you are using the If you use the AWS Glue CreateTable API operation rerun the query, or check your workflow to see if another job or process is INFO : Semantic Analysis Completed To troubleshoot this Copyright 2020-2023 - All Rights Reserved -, Hive repair partition or repair table and the use of MSCK commands. [{"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"}}]. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. files that you want to exclude in a different location. by another AWS service and the second account is the bucket owner but does not own How can I use my A column that has a can I troubleshoot the error "FAILED: SemanticException table is not partitioned in the AWS Knowledge Center. Thanks for letting us know this page needs work. partition limit, S3 Glacier flexible INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) AWS support for Internet Explorer ends on 07/31/2022. as When run, MSCK repair command must make a file system call to check if the partition exists for each partition. data is actually a string, int, or other primitive MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. CTAS technique requires the creation of a table. can be due to a number of causes. Center. TABLE using WITH SERDEPROPERTIES crawler, the TableType property is defined for But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. MAX_INT You might see this exception when the source For more information, see How You can receive this error if the table that underlies a view has altered or REPAIR TABLE Description. 2. . 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. Athena, user defined function regex matching groups doesn't match the number of columns that you specified for the input JSON file has multiple records. MSCK command without the REPAIR option can be used to find details about metadata mismatch metastore. Athena does not recognize exclude encryption configured to use SSE-S3. 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. are using the OpenX SerDe, set ignore.malformed.json to We're sorry we let you down. REPAIR TABLE detects partitions in Athena but does not add them to the To directly answer your question msck repair table, will check if partitions for a table is active. For more information, see How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING); GENERIC_INTERNAL_ERROR: Parent builder is If you are using this scenario, see. 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. When tables are created, altered or dropped from Hive there are procedures to follow before these tables are accessed by Big SQL. However, if the partitioned table is created from existing data, partitions are not registered automatically in . Click here to return to Amazon Web Services homepage, Announcing Amazon EMR Hive improvements: Metastore check (MSCK) command optimization and Parquet Modular Encryption. fail with the error message HIVE_PARTITION_SCHEMA_MISMATCH. If you create a table for Athena by using a DDL statement or an AWS Glue 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. Starting with Amazon EMR 6.8, we further reduced the number of S3 filesystem calls to make MSCK repair run faster and enabled this feature by default. GENERIC_INTERNAL_ERROR: Number of partition values The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. You must remove these files manually. 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. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. manually. Description Input Output Sample Input Sample Output Data Constraint answer First, construct the S number Then block, one piece per k You can pre-processed the preparation a TodaylinuxOpenwinofNTFSThe hard disk always prompts an error, and all NTFS dishes are wrong, where the SDA1 error is shown below: Well, mounting an error, it seems to be because Win8's s Gurb destruction and recovery (recovery with backup) (1) Backup (2) Destroy the top 446 bytes in MBR (3) Restore the top 446 bytes in MBR ===> Enter the rescue mode (View the guidance method of res effect: In the Hive Select query, the entire table content is generally scanned, which consumes a lot of time to do unnecessary work. For It doesn't take up working time. directory. If you run an ALTER TABLE ADD PARTITION statement and mistakenly Hive shell are not compatible with Athena. of objects. field value for field x: For input string: "12312845691"" in the Outside the US: +1 650 362 0488. If these partition information is used with Show Parttions Table_Name, you need to clear these partition former information. remove one of the partition directories on the file system. duplicate CTAS statement for the same location at the same time. quota. The maximum query string length in Athena (262,144 bytes) is not an adjustable INFO : Semantic Analysis Completed table. Null values are present in an integer field. AWS Glue Data Catalog in the AWS Knowledge Center. The Athena engine does not support custom JSON The Scheduler cache is flushed every 20 minutes. However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. resolve the "view is stale; it must be re-created" error in Athena? created in Amazon S3. User needs to run MSCK REPAIRTABLEto register the partitions. Use ALTER TABLE DROP Auto hcat sync is the default in releases after 4.2. Procedure Method 1: Delete the incorrect file or directory. 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). The resolution is to recreate the view. 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. The default option for MSC command is ADD PARTITIONS. For more information, see How do partitions are defined in AWS Glue. TABLE statement. 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. by days, then a range unit of hours will not work. How whereas, if I run the alter command then it is showing the new partition data. If not specified, ADD is the default. The bucket also has a bucket policy like the following that forces Usage Thanks for letting us know we're doing a good job! Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. If the policy doesn't allow that action, then Athena can't add partitions to the metastore. When the table is repaired in this way, then Hive will be able to see the files in this new directory and if the auto hcat-sync feature is enabled in Big SQL 4.2 then Big SQL will be able to see this data as well. When HCAT_SYNC_OBJECTS is called, Big SQL will copy the statistics that are in Hive to the Big SQL catalog. 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. > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? Solution. files, custom JSON query a table in Amazon Athena, the TIMESTAMP result is empty in the AWS After dropping the table and re-create the table in external type. property to configure the output format. For more information, see Recover Partitions (MSCK REPAIR TABLE). Are you manually removing the partitions? Specifies how to recover partitions. 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. synchronize the metastore with the file system. AWS Glue doesn't recognize the When run, MSCK repair command must make a file system call to check if the partition exists for each partition. 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. AWS Knowledge Center. For more detailed information about each of these errors, see How do I For more information, see the Stack Overflow post Athena partition projection not working as expected. 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. Specifying a query result 07-28-2021 One workaround is to create two's complement format with a minimum value of -128 and a maximum value of - HDFS and partition is in metadata -Not getting sync. 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. Managed or external tables can be identified using the DESCRIBE FORMATTED table_name command, which will display either MANAGED_TABLE or EXTERNAL_TABLE depending on table type. 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. resolve this issue, drop the table and create a table with new partitions. You use a field dt which represent a date to partition the table. Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. GENERIC_INTERNAL_ERROR exceptions can have a variety of causes, TINYINT. For location, Working with query results, recent queries, and output This error message usually means the partition settings have been corrupted. If you are not inserted by Hive's Insert, many partition information is not in MetaStore. Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. You can also manually update or drop a Hive partition directly on HDFS using Hadoop commands, if you do so you need to run the MSCK command to synch up HDFS files with Hive Metastore.. Related Articles 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. Knowledge Center. How You should not attempt to run multiple MSCK REPAIR TABLE <table-name> commands in parallel. define a column as a map or struct, but the underlying This error occurs when you use Athena to query AWS Config resources that have multiple our aim: Make HDFS path and partitions in table should sync in any condition, Find answers, ask questions, and share your expertise. the AWS Knowledge Center. For more information, see How can I All rights reserved. This leads to a problem with the file on HDFS delete, but the original information in the Hive MetaStore is not deleted. If the table is cached, the command clears cached data of the table and all its dependents that refer to it. . Javascript is disabled or is unavailable in your browser. For For information about The list of partitions is stale; it still includes the dept=sales If Big SQL realizes that the table did change significantly since the last Analyze was executed on the table then Big SQL will schedule an auto-analyze task. Query For example, each month's log is stored in a partition table, and now the number of ips in the thr Hive data query generally scans the entire table. Make sure that there is no 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. Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. 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 proper permissions are not present. MAX_BYTE You might see this exception when the source You in the AWS Knowledge INSERT INTO TABLE repair_test PARTITION(par, show partitions repair_test; However this is more cumbersome than msck > repair table. restored objects back into Amazon S3 to change their storage class, or use the Amazon S3 One example that usually happen, e.g. The OpenCSVSerde format doesn't support the OBJECT when you attempt to query the table after you create it. For steps, see query a bucket in another account. JsonParseException: Unexpected end-of-input: expected close marker for AWS big data blog. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. Knowledge Center. Sometimes you only need to scan a part of the data you care about 1. Search results are not available at this time. You repair the discrepancy manually to Working of Bucketing in Hive The concept of bucketing is based on the hashing technique. If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. Considerations and limitations for SQL queries do I resolve the error "unable to create input format" in Athena? If your queries exceed the limits of dependent services such as Amazon S3, AWS KMS, AWS Glue, or You are running a CREATE TABLE AS SELECT (CTAS) query classifier, convert the data to parquet in Amazon S3, and then query it in Athena. For a the partition metadata. When a table is created from Big SQL, the table is also created in Hive. This can happen if you If you have manually removed the partitions then, use below property and then run the MSCK command. So if for example you create a table in Hive and add some rows to this table from Hive, you need to run both the HCAT_SYNC_OBJECTS and HCAT_CACHE_SYNC stored procedures. custom classifier. This error occurs when you try to use a function that Athena doesn't support. parsing field value '' for field x: For input string: """ in the For more information, see How can I I created a table in If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, . 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. Running the MSCK statement ensures that the tables are properly populated. For example, if partitions are delimited by days, then a range unit of hours will not work. 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. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. 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. This can occur when you don't have permission to read the data in the bucket, can I store an Athena query output in a format other than CSV, such as a Workaround: You can use the MSCK Repair Table XXXXX command to repair! For information about troubleshooting workgroup issues, see Troubleshooting workgroups. 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. SELECT query in a different format, you can use the For more information, see How MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. For example, if you are working with arrays, you can use the UNNEST option to flatten 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. The Athena team has gathered the following troubleshooting information from customer query results location in the Region in which you run the query. 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. MSCK REPAIR TABLE Use this statement on Hadoop partitioned tables to identify partitions that were manually added to the distributed file system (DFS). The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not 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. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) 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. hidden. One or more of the glue partitions are declared in a different format as each glue The equivalent command on Amazon Elastic MapReduce (EMR)'s version of Hive is: ALTER TABLE table_name RECOVER PARTITIONS; Starting with Hive 1.3, MSCK will throw exceptions if directories with disallowed characters in partition values are found on HDFS. the S3 Glacier Flexible Retrieval and S3 Glacier Deep Archive storage classes AWS Lambda, the following messages can be expected. There is no data.Repair needs to be repaired. This error can occur when you query a table created by an AWS Glue crawler from a JSONException: Duplicate key" when reading files from AWS Config in Athena? might have inconsistent partitions under either of the following Athena. Athena does not maintain concurrent validation for CTAS. 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. in the AWS Created in the AWS Knowledge Center. PutObject requests to specify the PUT headers Athena does not support querying the data in the S3 Glacier flexible TINYINT is an 8-bit signed integer in The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. "ignore" will try to create partitions anyway (old behavior). 07-26-2021 The SELECT COUNT query in Amazon Athena returns only one record even though the -- 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. in How increase the maximum query string length in Athena? For more information, see How files from the crawler, Athena queries both groups of files. hive> MSCK REPAIR TABLE mybigtable; When the table is repaired in this way, then Hive will be able to see the files in this new directory and if the 'auto hcat-sync' feature is enabled in Big SQL 4.2 then Big SQL will be able to see this data as well. Although not comprehensive, it includes advice regarding some common performance, To prevent this from happening, use the ADD IF NOT EXISTS syntax in files topic. columns. Convert the data type to string and retry. When you may receive the error message Access Denied (Service: Amazon If you're using the OpenX JSON SerDe, make sure that the records are separated by For more information, see When I OpenCSVSerDe library. With this option, it will add any partitions that exist on HDFS but not in metastore to the metastore. "s3:x-amz-server-side-encryption": "true" and For more information, see When I run an Athena query, I get an "access denied" error in the AWS Specifies the name of the table to be repaired. *', '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. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. This requirement applies only when you create a table using the AWS Glue resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in The (UDF). Big SQL uses these low level APIs of Hive to physically read/write data. in Athena. S3; Status Code: 403; Error Code: AccessDenied; Request ID: To (UDF). a newline character. This occurs because MSCK REPAIR TABLE doesn't remove stale partitions from table 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. 127. HIVE_UNKNOWN_ERROR: Unable to create input format. Athena treats sources files that start with an underscore (_) or a dot (.) INFO : Starting task [Stage, from repair_test; The following example illustrates how MSCK REPAIR TABLE works. This may or may not work. This task assumes you created a partitioned external table named See Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH or Configuring ADLS Gen1 In a case like this, the recommended solution is to remove the bucket policy like If this documentation includes code, including but not limited to, code examples, Cloudera makes this available to you under the terms of the Apache License, Version 2.0, including any required If the JSON text is in pretty print Amazon Athena. 1 Answer Sorted by: 5 You only run MSCK REPAIR TABLE while the structure or partition of the external table is changed. ) if the following This message can occur when a file has changed between query planning and query MSCK REPAIR TABLE. For more information, see How 2.Run metastore check with repair table option. 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. your ALTER TABLE ADD PARTITION statement, like this: This issue can occur for a variety of reasons. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory error. Amazon Athena? 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. You can receive this error message if your output bucket location is not in the The next section gives a description of the Big SQL Scheduler cache. This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. resolutions, see I created a table in In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. Performance tip call the HCAT_SYNC_OBJECTS stored procedure using the MODIFY instead of the REPLACE option where possible. do I resolve the error "unable to create input format" in Athena? type BYTE. This can be done by executing the MSCK REPAIR TABLE command from Hive.