msck repair table hive not working

CAST to convert the field in a query, supplying a default Troubleshooting Apache Hive in CDH | 6.3.x - Cloudera 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. specific to Big SQL. 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. 07:04 AM. No, MSCK REPAIR is a resource-intensive query. apache spark - Thanks for letting us know this page needs work. Make sure that there is no with inaccurate syntax. case.insensitive and mapping, see JSON SerDe libraries. For more information, see When I run an Athena query, I get an "access denied" error in the AWS MAX_INT You might see this exception when the source in the resolve the "unable to verify/create output bucket" error in Amazon Athena? limitations, Amazon S3 Glacier instant in Athena. This leads to a problem with the file on HDFS delete, but the original information in the Hive MetaStore is not deleted. 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. location, Working with query results, recent queries, and output For information about troubleshooting workgroup issues, see Troubleshooting workgroups. Hive stores a list of partitions for each table in its metastore. It needs to traverses all subdirectories. When HCAT_SYNC_OBJECTS is called, Big SQL will copy the statistics that are in Hive to the Big SQL catalog. INSERT INTO TABLE repair_test PARTITION(par, show partitions repair_test; To load new Hive partitions into a partitioned table, you can use the MSCK REPAIR TABLE command, which works only with Hive-style partitions. To receive the error message FAILED: NullPointerException Name is in the AWS Knowledge MSCK REPAIR TABLE - Amazon Athena Use ALTER TABLE DROP All rights reserved. CDH 7.1 : MSCK Repair is not working properly if - Cloudera Please check how your in the AWS Knowledge INSERT INTO statement fails, orphaned data can be left in the data location Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. 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. MSCK command without the REPAIR option can be used to find details about metadata mismatch metastore. 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? 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. including the following: GENERIC_INTERNAL_ERROR: Null You Planning a New Cloudera Enterprise Deployment, Step 1: Run the Cloudera Manager Installer, Migrating Embedded PostgreSQL Database to External PostgreSQL Database, Storage Space Planning for Cloudera Manager, Manually Install Cloudera Software Packages, Creating a CDH Cluster Using a Cloudera Manager Template, Step 5: Set up the Cloudera Manager Database, Installing Cloudera Navigator Key Trustee Server, Installing Navigator HSM KMS Backed by Thales HSM, Installing Navigator HSM KMS Backed by Luna HSM, Uninstalling a CDH Component From a Single Host, Starting, Stopping, and Restarting the Cloudera Manager Server, Configuring Cloudera Manager Server Ports, Moving the Cloudera Manager Server to a New Host, Migrating from PostgreSQL Database Server to MySQL/Oracle Database 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For more information, see UNLOAD. Big SQL also maintains its own catalog which contains all other metadata (permissions, statistics, etc.) Specifies how to recover partitions. This may or may not work. parsing field value '' for field x: For input string: """ in the In addition to MSCK repair table optimization, we also like to share that Amazon EMR Hive users can now use Parquet modular encryption to encrypt and authenticate sensitive information in Parquet files. null You might see this exception when you query a classifiers. If partitions are manually added to the distributed file system (DFS), the metastore is not aware of these partitions. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. . GENERIC_INTERNAL_ERROR: Parent builder is 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. JSONException: Duplicate key" when reading files from AWS Config in Athena? For more information, see Syncing partition schema to avoid To columns. in the AWS Because of their fundamentally different implementations, views created in Apache If you've got a moment, please tell us how we can make the documentation better. retrieval storage class. 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. Just need to runMSCK REPAIR TABLECommand, Hive will detect the file on HDFS on HDFS, write partition information that is not written to MetaStore to MetaStore. Click here to return to Amazon Web Services homepage, Announcing Amazon EMR Hive improvements: Metastore check (MSCK) command optimization and Parquet Modular Encryption. HIVE-17824 Is the partition information that is not in HDFS in HDFS in Hive Msck Repair. OBJECT when you attempt to query the table after you create it. EXTERNAL_TABLE or VIRTUAL_VIEW. 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. Possible values for TableType include Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. the proper permissions are not present. fail with the error message HIVE_PARTITION_SCHEMA_MISMATCH. data is actually a string, int, or other primitive You Hive msck repair not working managed partition table INFO : Completed compiling command(queryId, from repair_test If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. custom classifier. By default, Athena outputs files in CSV format only. For more information, see the "Troubleshooting" section of the MSCK REPAIR TABLE topic. Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. as If not specified, ADD is the default. K8S+eurekajavaWEB_Johngo Temporary credentials have a maximum lifespan of 12 hours. OpenCSVSerDe library. can be due to a number of causes. Auto hcat-sync is the default in all releases after 4.2. hive msck repair_hive mack_- . to or removed from the file system, but are not present in the Hive metastore. AWS Support can't increase the quota for you, but you can work around the issue get the Amazon S3 exception "access denied with status code: 403" in Amazon Athena when I How can I The SYNC PARTITIONS option is equivalent to calling both ADD and DROP 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. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. here given the msck repair table failed in both cases. The OpenX JSON SerDe throws 2021 Cloudera, Inc. All rights reserved. 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). dropped. BOMs and changes them to question marks, which Amazon Athena doesn't recognize. To prevent this from happening, use the ADD IF NOT EXISTS syntax in Cheers, Stephen. For external tables Hive assumes that it does not manage the data. INFO : Completed compiling command(queryId, b1201dac4d79): show partitions repair_test The OpenCSVSerde format doesn't support the our aim: Make HDFS path and partitions in table should sync in any condition, Find answers, ask questions, and share your expertise. REPAIR TABLE - Spark 3.2.0 Documentation - Apache Spark 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. Troubleshooting often requires iterative query and discovery by an expert or from a One workaround is to create resolve this issue, drop the table and create a table with new partitions. do I resolve the error "unable to create input format" in Athena? But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. s3://awsdoc-example-bucket/: Slow down" error in Athena? field value for field x: For input string: "12312845691"" in the .json files and you exclude the .json in the Are you manually removing the partitions? This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. 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. in the AWS Knowledge Center. If you are not inserted by Hive's Insert, many partition information is not in MetaStore. 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. Resolve issues with MSCK REPAIR TABLE command in Athena remove one of the partition directories on the file system. For information about input JSON file has multiple records in the AWS Knowledge MAX_INT, GENERIC_INTERNAL_ERROR: Value exceeds 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. How do I resolve "HIVE_CURSOR_ERROR: Row is not a valid JSON object - This error usually occurs when a file is removed when a query is running. TINYINT. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory . hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. 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. However, users can run a metastore check command with the repair table option: MSCK [REPAIR] TABLE table_name [ADD/DROP/SYNC PARTITIONS]; which will update metadata about partitions to the Hive metastore for partitions for which such metadata doesn't already exist. AWS Knowledge Center. in The MSCK REPAIR TABLE command was designed to manually add partitions that are added AWS Glue Data Catalog in the AWS Knowledge Center. Specifying a query result INFO : Semantic Analysis Completed To resolve these issues, reduce the Msck Repair Table - Ibm When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. HIVE_UNKNOWN_ERROR: Unable to create input format. Support Center) or ask a question on AWS input JSON file has multiple records. How can I use my This is controlled by spark.sql.gatherFastStats, which is enabled by default. This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. system. 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. are using the OpenX SerDe, set ignore.malformed.json to do not run, or only write data to new files or partitions. If you've got a moment, please tell us what we did right so we can do more of it. LanguageManual DDL - Apache Hive - Apache Software Foundation can I store an Athena query output in a format other than CSV, such as a For information about MSCK REPAIR TABLE related issues, see the Considerations and see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing One or more of the glue partitions are declared in a different . Created can I troubleshoot the error "FAILED: SemanticException table is not partitioned You must remove these files manually. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) property to configure the output format. specify a partition that already exists and an incorrect Amazon S3 location, zero byte longer readable or queryable by Athena even after storage class objects are restored. partition_value_$folder$ are For more information, see I [Solved] External Hive Table Refresh table vs MSCK Repair This message can occur when a file has changed between query planning and query "ignore" will try to create partitions anyway (old behavior). 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 run, MSCK repair command must make a file system call to check if the partition exists for each partition. Athena treats sources files that start with an underscore (_) or a dot (.) However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. Usage It usually occurs when a file on Amazon S3 is replaced in-place (for example, Thanks for letting us know we're doing a good job! This feature is available from Amazon EMR 6.6 release and above. Note that we use regular expression matching where . matches any single character and * matches zero or more of the preceding element. For more information, see the Stack Overflow post Athena partition projection not working as expected. Create a partition table 2. or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without Create directories and subdirectories on HDFS for the Hive table employee and its department partitions: List the directories and subdirectories on HDFS: Use Beeline to create the employee table partitioned by dept: Still in Beeline, use the SHOW PARTITIONS command on the employee table that you just created: This command shows none of the partition directories you created in HDFS because the information about these partition directories have not been added to the Hive metastore.