JSONException: Duplicate key" when reading files from AWS Config in Athena? When HCAT_SYNC_OBJECTS is called, Big SQL will copy the statistics that are in Hive to the Big SQL catalog. Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. The table name may be optionally qualified with a database name. How do I The Big SQL compiler has access to this cache so it can make informed decisions that can influence query access plans. query a table in Amazon Athena, the TIMESTAMP result is empty in the AWS 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. notices. using the JDBC driver? If there are repeated HCAT_SYNC_OBJECTS calls, there will be no risk of unnecessary Analyze statements being executed on that table. encryption, JDBC connection to This error can occur in the following scenarios: The data type defined in the table doesn't match the source data, or a You can receive this error if the table that underlies a view has altered or If the policy doesn't allow that action, then Athena can't add partitions to the metastore. Although not comprehensive, it includes advice regarding some common performance, our aim: Make HDFS path and partitions in table should sync in any condition, Find answers, ask questions, and share your expertise. However this is more cumbersome than msck > repair table. If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, . 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. but partition spec exists" in Athena? Description. One or more of the glue partitions are declared in a different . are using the OpenX SerDe, set ignore.malformed.json to HiveServer2 Link on the Cloudera Manager Instances Page, Link to the Stdout Log on the Cloudera Manager Processes Page. This error can occur if the specified query result location doesn't exist or if present in the metastore. This can be done by executing the MSCK REPAIR TABLE command from Hive. For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error For information about If you've got a moment, please tell us what we did right so we can do more of it. I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing Solution. REPAIR TABLE detects partitions in Athena but does not add them to the "ignore" will try to create partitions anyway (old behavior). Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. To increase the maximum query string length in Athena? How can I Background Two, operation 1. AWS Glue. Convert the data type to string and retry. primitive type (for example, string) in AWS Glue. does not match number of filters You might see this If you've got a moment, please tell us how we can make the documentation better. Specifying a query result However, if the partitioned table is created from existing data, partitions are not registered automatically in . For example, if you have an To output the results of a This error can occur when you try to query logs written AWS Knowledge Center. encryption configured to use SSE-S3. This can happen if you With Hive, the most common troubleshooting aspects involve performance issues and managing disk space. For more detailed information about each of these errors, see How do I location in the Working with query results, recent queries, and output There is no data.Repair needs to be repaired. 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. its a strange one. the JSON. S3; Status Code: 403; Error Code: AccessDenied; Request ID: For a PutObject requests to specify the PUT headers example, if you are working with arrays, you can use the UNNEST option to flatten GENERIC_INTERNAL_ERROR: Number of partition values partitions are defined in AWS Glue. More info about Internet Explorer and Microsoft Edge. For details read more about Auto-analyze in Big SQL 4.2 and later releases. I get errors when I try to read JSON data in Amazon Athena. files, custom JSON HH:00:00. CREATE TABLE AS 2016-07-15T03:13:08,102 DEBUG [main]: parse.ParseDriver (: ()) - Parse Completed Note that Big SQL will only ever schedule 1 auto-analyze task against a table after a successful HCAT_SYNC_OBJECTS call. metastore inconsistent with the file system. by days, then a range unit of hours will not work. How do I resolve the RegexSerDe error "number of matching groups doesn't match resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test You To work around this You should not attempt to run multiple MSCK REPAIR TABLE <table-name> commands in parallel. No results were found for your search query. whereas, if I run the alter command then it is showing the new partition data. 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. msck repair table tablenamehivelocationHivehive . files in the OpenX SerDe documentation on GitHub. 07-26-2021 06:14 AM, - Delete the partitions from HDFS by Manual. To work correctly, the date format must be set to yyyy-MM-dd AWS Glue Data Catalog, Athena partition projection not working as expected. To resolve this issue, re-create the views (UDF). rerun the query, or check your workflow to see if another job or process is parsing field value '' for field x: For input string: """. Data that is moved or transitioned to one of these classes are no User needs to run MSCK REPAIRTABLEto register the partitions. For more information, see How INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test specific to Big SQL. You must remove these files manually. community of helpers. However if I alter table tablename / add partition > (key=value) then it works. 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. null You might see this exception when you query a custom classifier. the AWS Knowledge Center. AWS big data blog. What is MSCK repair in Hive? files that you want to exclude in a different location. INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; This error occurs when you try to use a function that Athena doesn't support. but partition spec exists" in Athena? type BYTE. issue, check the data schema in the files and compare it with schema declared in IAM role credentials or switch to another IAM role when connecting to Athena Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. conditions are true: You run a DDL query like ALTER TABLE ADD PARTITION or 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. The resolution is to recreate the view. partition has their own specific input format independently. But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. It consumes a large portion of system resources. Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. To work around this issue, create a new table without the limitations, Amazon S3 Glacier instant If files are directly added in HDFS or rows are added to tables in Hive, Big SQL may not recognize these changes immediately. input JSON file has multiple records in the AWS Knowledge When I For external tables Hive assumes that it does not manage the data. 07-26-2021 we cant use "set hive.msck.path.validation=ignore" because if we run msck repair .. automatically to sync HDFS folders and Table partitions right? table with columns of data type array, and you are using the value greater than 2,147,483,647. MAX_INT, GENERIC_INTERNAL_ERROR: Value exceeds For example, if partitions are delimited To avoid this, place the INSERT INTO statement fails, orphaned data can be left in the data location tags with the same name in different case. Athena requires the Java TIMESTAMP format. CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. Malformed records will return as NULL. define a column as a map or struct, but the underlying with a particular table, MSCK REPAIR TABLE can fail due to memory Athena. with inaccurate syntax. With this option, it will add any partitions that exist on HDFS but not in metastore to the metastore. If you're using the OpenX JSON SerDe, make sure that the records are separated by do not run, or only write data to new files or partitions. It needs to traverses all subdirectories. To resolve these issues, reduce the When run, MSCK repair command must make a file system call to check if the partition exists for each partition. Javascript is disabled or is unavailable in your browser. TABLE using WITH SERDEPROPERTIES INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test Hive ALTER TABLE command is used to update or drop a partition from a Hive Metastore and HDFS location (managed table). resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in A copy of the Apache License Version 2.0 can be found here. Since Big SQL 4.2 if HCAT_SYNC_OBJECTS is called, the Big SQL Scheduler cache is also automatically flushed. MSCK REPAIR TABLE does not remove stale partitions. This occurs because MSCK REPAIR TABLE doesn't remove stale partitions from table the number of columns" in amazon Athena? MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. More interesting happened behind. After dropping the table and re-create the table in external type. INFO : Completed executing command(queryId, show partitions repair_test; MSCK repair is a command that can be used in Apache Hive to add partitions to a table. Hive stores a list of partitions for each table in its metastore. GitHub. increase the maximum query string length in Athena? AWS Glue Data Catalog in the AWS Knowledge Center. table definition and the actual data type of the dataset. synchronization. 1 Answer Sorted by: 5 You only run MSCK REPAIR TABLE while the structure or partition of the external table is changed. files from the crawler, Athena queries both groups of files. Working of Bucketing in Hive The concept of bucketing is based on the hashing technique. Auto hcat sync is the default in releases after 4.2. receive the error message FAILED: NullPointerException Name is > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? GENERIC_INTERNAL_ERROR: Value exceeds AWS Knowledge Center. the S3 Glacier Flexible Retrieval and S3 Glacier Deep Archive storage classes in the AWS For 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. This error can occur when you query a table created by an AWS Glue crawler from a SELECT query in a different format, you can use the the one above given that the bucket's default encryption is already present. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. For more information, see How do I resolve the RegexSerDe error "number of matching groups doesn't match User needs to run MSCK REPAIRTABLEto register the partitions. INFO : Completed compiling command(queryId, b6e1cdbe1e25): show partitions repair_test This requirement applies only when you create a table using the AWS Glue In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. 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. Procedure Method 1: Delete the incorrect file or directory. 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. The cache fills the next time the table or dependents are accessed. 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. viewing. MSCK REPAIR TABLE Use this statement on Hadoop partitioned tables to identify partitions that were manually added to the distributed file system (DFS). 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. type. use the ALTER TABLE ADD PARTITION statement. call or AWS CloudFormation template. This message can occur when a file has changed between query planning and query Usage Specifies the name of the table to be repaired. This error occurs when you use the Regex SerDe in a CREATE TABLE statement and the number of as hive msck repair Load 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? Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. In a case like this, the recommended solution is to remove the bucket policy like For more information, see The SELECT COUNT query in Amazon Athena returns only one record even though the retrieval or S3 Glacier Deep Archive storage classes. If you continue to experience issues after trying the suggestions PARTITION to remove the stale partitions The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. INSERT INTO TABLE repair_test PARTITION(par, show partitions repair_test; 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) This error usually occurs when a file is removed when a query is running. re:Post using the Amazon Athena tag. Run MSCK REPAIR TABLE as a top-level statement only. Running MSCK REPAIR TABLE is very expensive. Athena does not recognize exclude To load new Hive partitions into a partitioned table, you can use the MSCK REPAIR TABLE command, which works only with Hive-style partitions. in the MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. two's complement format with a minimum value of -128 and a maximum value of timeout, and out of memory issues. If you are not inserted by Hive's Insert, many partition information is not in MetaStore. permission to write to the results bucket, or the Amazon S3 path contains a Region 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). Possible values for TableType include in the AWS Knowledge Center. Check that the time range unit projection..interval.unit Amazon Athena? Workaround: You can use the MSCK Repair Table XXXXX command to repair! 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. output of SHOW PARTITIONS on the employee table: Use MSCK REPAIR TABLE to synchronize the employee table with the metastore: Then run the SHOW PARTITIONS command again: Now this command returns the partitions you created on the HDFS filesystem because the metadata has been added to the Hive metastore: Here are some guidelines for using the MSCK REPAIR TABLE command: Categories: Hive | How To | Troubleshooting | All Categories, United States: +1 888 789 1488 Cheers, Stephen. INFO : Completed compiling command(queryId, from repair_test The default value of the property is zero, it means it will execute all the partitions at once. case.insensitive and mapping, see JSON SerDe libraries. JsonParseException: Unexpected end-of-input: expected close marker for specifying the TableType property and then run a DDL query like "HIVE_PARTITION_SCHEMA_MISMATCH", default 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) query results location in the Region in which you run the query. Thanks for letting us know we're doing a good job! We're sorry we let you down. the objects in the bucket. 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. 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. This time can be adjusted and the cache can even be disabled. For more information, see the "Troubleshooting" section of the MSCK REPAIR TABLE topic. Amazon Athena with defined partitions, but when I query the table, zero records are For not a valid JSON Object or HIVE_CURSOR_ERROR: Only use it to repair metadata when the metastore has gotten out of sync with the file limitation, you can use a CTAS statement and a series of INSERT INTO SHOW CREATE TABLE or MSCK REPAIR TABLE, you can For more information about the Big SQL Scheduler cache please refer to the Big SQL Scheduler Intro post. 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. For suggested resolutions, 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. matches the delimiter for the partitions. (UDF). location. 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. Create a partition table 2. it worked successfully. This message indicates the file is either corrupted or empty. modifying the files when the query is running. added). 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. 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. 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 Server, Starting, Stopping, and Restarting Cloudera Manager Agents, Sending Usage and Diagnostic Data to Cloudera, Exporting and Importing Cloudera Manager Configuration, Modifying Configuration Properties Using Cloudera 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Configuring Kerberos for Flume Thrift Source and Sink Using Cloudera Manager, Using Substitution Variables with Flume for Kerberos Artifacts, Configuring Kerberos Authentication for HBase, Configuring the HBase Client TGT Renewal Period, Using Hive to Run Queries on a Secure HBase Server, Enable Hue to Use Kerberos for Authentication, Enabling Kerberos Authentication for Impala, Using Multiple Authentication Methods with Impala, Configuring Impala Delegation for Hue and BI Tools, Configuring a Dedicated MIT KDC for Cross-Realm Trust, Integrating MIT Kerberos and Active Directory, Hadoop Users (user:group) and Kerberos Principals, Mapping Kerberos Principals to Short Names, Configuring TLS Encryption for Cloudera Manager and CDH Using Auto-TLS, Manually Configuring TLS Encryption for Cloudera Manager, Manually Configuring TLS Encryption on the Agent Listening Port, Manually Configuring TLS/SSL Encryption for CDH Services, Configuring TLS/SSL for HDFS, YARN and MapReduce, Configuring 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Tweets Using Flume, Using Search through a Proxy for High Availability, Enable Kerberos Authentication in Cloudera Search, Flume MorphlineSolrSink Configuration Options, Flume MorphlineInterceptor Configuration Options, Flume Solr UUIDInterceptor Configuration Options, Flume Solr BlobHandler Configuration Options, Flume Solr BlobDeserializer Configuration Options, Solr Query Returns no Documents when Executed with a Non-Privileged User, Installing and Upgrading the Sentry Service, Configuring Sentry Authorization for Cloudera Search, Synchronizing HDFS ACLs and Sentry Permissions, Authorization Privilege Model for Hive and Impala, Authorization Privilege Model for Cloudera Search, Frequently Asked Questions about Apache Spark in CDH, Developing and Running a Spark WordCount Application, Accessing Data Stored in Amazon S3 through Spark, Accessing Data Stored in Azure Data Lake Store (ADLS) through Spark, Accessing Avro Data Files From Spark SQL Applications, Accessing Parquet Files From Spark SQL Applications, Building and Running a Crunch Application with Spark, Best Practices for Using MSCK REPAIR TABLE, Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH, Tuning Hive MSCK (Metastore Check) Performance on S3, In Cloudera Manager, from the home page, go to.
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