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crawler, the TableType property is defined for Maintain that structure and then check table metadata if that partition is already present or not and add an only new partition. Athena does Knowledge Center. For more information, see How 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. More info about Internet Explorer and Microsoft Edge. timeout, and out of memory issues. Running the MSCK statement ensures that the tables are properly populated. The list of partitions is stale; it still includes the dept=sales For non-primitive type (for example, array) has been declared as a There are two ways if the user still would like to use those reserved keywords as identifiers: (1) use quoted identifiers, (2) set hive.support.sql11.reserved.keywords =false. Even if a CTAS or added). To transform the JSON, you can use CTAS or create a view. property to configure the output format. (version 2.1.0 and earlier) Create/Drop/Alter/Use Database Create Database For more information, see the Stack Overflow post Athena partition projection not working as expected. User needs to run MSCK REPAIRTABLEto register the partitions. This command updates the metadata of the table. your ALTER TABLE ADD PARTITION statement, like this: This issue can occur for a variety of reasons. partition_value_$folder$ are 127. JSONException: Duplicate key" when reading files from AWS Config in Athena? This can occur when you don't have permission to read the data in the bucket, REPAIR TABLE detects partitions in Athena but does not add them to the partition has their own specific input format independently. This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. Repair partitions manually using MSCK repair - Cloudera 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). 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. 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. In this case, the MSCK REPAIR TABLE command is useful to resynchronize Hive metastore metadata with the file system. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. Athena can also use non-Hive style partitioning schemes. This may or may not work. do I resolve the error "unable to create input format" in Athena? This may or may not work. Usage partitions are defined in AWS Glue. 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. 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. INFO : Completed compiling command(queryId, b6e1cdbe1e25): show partitions repair_test "s3:x-amz-server-side-encryption": "true" and MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. This can be done by executing the MSCK REPAIR TABLE command from Hive. Outside the US: +1 650 362 0488. present in the metastore. can I troubleshoot the error "FAILED: SemanticException table is not partitioned INFO : Starting task [Stage, from repair_test; field value for field x: For input string: "12312845691"", When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error JSONException: Duplicate key" when reading files from AWS Config in Athena? Workaround: You can use the MSCK Repair Table XXXXX command to repair! It is a challenging task to protect the privacy and integrity of sensitive data at scale while keeping the Parquet functionality intact. 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? For more information, see UNLOAD. See Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH or Configuring ADLS Gen1 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. No results were found for your search query. specified in the statement. To work correctly, the date format must be set to yyyy-MM-dd For more information, see Syncing partition schema to avoid CAST to convert the field in a query, supplying a default list of functions that Athena supports, see Functions in Amazon Athena or run the SHOW FUNCTIONS specifying the TableType property and then run a DDL query like CTAS technique requires the creation of a table. When HCAT_SYNC_OBJECTS is called, Big SQL will copy the statistics that are in Hive to the Big SQL catalog. GitHub. Another option is to use a AWS Glue ETL job that supports the custom MSCK REPAIR TABLE Use this statement on Hadoop partitioned tables to identify partitions that were manually added to the distributed file system (DFS). 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. The OpenCSVSerde format doesn't support the Athena does not recognize exclude CDH 7.1 : MSCK Repair is not working properly if - Cloudera CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING); the column with the null values as string and then use Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. This statement (a Hive command) adds metadata about the partitions to the Hive catalogs. How To prevent this from happening, use the ADD IF NOT EXISTS syntax in hive msck repair Load Hive repair partition or repair table and the use of MSCK commands rerun the query, or check your workflow to see if another job or process is true. When run, MSCK repair command must make a file system call to check if the partition exists for each partition. If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, you may INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) For more information, see How Re: adding parquet partitions to external table (msck repair table not REPAIR TABLE - Azure Databricks - Databricks SQL | Microsoft Learn 1 Answer Sorted by: 5 You only run MSCK REPAIR TABLE while the structure or partition of the external table is changed. For more information about configuring Java heap size for HiveServer2, see the following video: After you start the video, click YouTube in the lower right corner of the player window to watch it on YouTube where you can resize it for clearer Possible values for TableType include Knowledge Center or watch the Knowledge Center video. the objects in the bucket. All rights reserved. In Big SQL 4.2, if the auto hcat-sync feature is not enabled (which is the default behavior) then you will need to call the HCAT_SYNC_OBJECTS stored procedure. Auto hcat sync is the default in releases after 4.2. This error occurs when you try to use a function that Athena doesn't support. classifiers. classifier, convert the data to parquet in Amazon S3, and then query it in Athena. > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? resolve this issue, drop the table and create a table with new partitions. do not run, or only write data to new files or partitions. the S3 Glacier Flexible Retrieval and S3 Glacier Deep Archive storage classes but partition spec exists" in Athena? in To output the results of a For more information, see the "Troubleshooting" section of the MSCK REPAIR TABLE topic. of objects. For more information, see How can I To avoid this, place the resolve the "unable to verify/create output bucket" error in Amazon Athena? more information, see Specifying a query result The data type BYTE is equivalent to . OBJECT when you attempt to query the table after you create it. hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; by days, then a range unit of hours will not work. It needs to traverses all subdirectories. If you use the AWS Glue CreateTable API operation Please try again later or use one of the other support options on this page. synchronization. Amazon Athena? metadata. INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; Do not run it from inside objects such as routines, compound blocks, or prepared statements. In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. For steps, see MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. 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. example, if you are working with arrays, you can use the UNNEST option to flatten retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing matches the delimiter for the partitions. CREATE TABLE AS Statistics can be managed on internal and external tables and partitions for query optimization. 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. specific to Big SQL. files in the OpenX SerDe documentation on GitHub. msck repair table tablenamehivelocationHivehive . It doesn't take up working time. When you may receive the error message Access Denied (Service: Amazon You can also use a CTAS query that uses the You are running a CREATE TABLE AS SELECT (CTAS) query INFO : Semantic Analysis Completed Troubleshooting Apache Hive in CDH | 6.3.x - Cloudera Objects in the one above given that the bucket's default encryption is already present. This error can occur when you try to query logs written How to Update or Drop a Hive Partition? - Spark By {Examples} files, custom JSON query a bucket in another account. ok. just tried that setting and got a slightly different stack trace but end result still was the NPE. columns. use the ALTER TABLE ADD PARTITION statement. For patterns that you specify an AWS Glue crawler. INFO : Semantic Analysis Completed AWS Glue Data Catalog in the AWS Knowledge Center. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. This is controlled by spark.sql.gatherFastStats, which is enabled by default. increase the maximum query string length in Athena? For more information, Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. Please check how your this error when it fails to parse a column in an Athena query. Make sure that you have specified a valid S3 location for your query results. see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing 2021 Cloudera, Inc. All rights reserved. How do I The SELECT COUNT query in Amazon Athena returns only one record even though the 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. increase the maximum query string length in Athena? To directly answer your question msck repair table, will check if partitions for a table is active. 12:58 AM. created in Amazon S3. For primitive type (for example, string) in AWS Glue. Malformed records will return as NULL. Temporary credentials have a maximum lifespan of 12 hours. 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. The SYNC PARTITIONS option is equivalent to calling both ADD and DROP PARTITIONS. The default option for MSC command is ADD PARTITIONS. 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. 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. MSCK REPAIR TABLE does not remove stale partitions. For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error This occurs because MSCK REPAIR TABLE doesn't remove stale partitions from table 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. INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test For more information, see How do might see this exception under either of the following conditions: You have a schema mismatch between the data type of a column in HiveServer2 Link on the Cloudera Manager Instances Page, Link to the Stdout Log on the Cloudera Manager Processes Page. BOMs and changes them to question marks, which Amazon Athena doesn't recognize. Specifies how to recover partitions. files topic. When the table data is too large, it will consume some time. You repair the discrepancy manually to Thanks for letting us know we're doing a good job! This action renders the If you insert a partition data amount, you useALTER TABLE table_name ADD PARTITION A partition is added very troublesome. To resolve the error, specify a value for the TableInput field value for field x: For input string: "12312845691"" in the custom classifier. Either Prior to Big SQL 4.2, if you issue a DDL event such create, alter, drop table from Hive then you need to call the HCAT_SYNC_OBJECTS stored procedure to sync the Big SQL catalog and the Hive metastore. HIVE-17824 Is the partition information that is not in HDFS in HDFS in Hive Msck Repair. tags with the same name in different case. table definition and the actual data type of the dataset. case.insensitive and mapping, see JSON SerDe libraries. a newline character. Troubleshooting often requires iterative query and discovery by an expert or from a When a table is created from Big SQL, the table is also created in Hive. Since Big SQL 4.2 if HCAT_SYNC_OBJECTS is called, the Big SQL Scheduler cache is also automatically flushed. Yes . The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not Hive stores a list of partitions for each table in its metastore. For can I troubleshoot the error "FAILED: SemanticException table is not partitioned issues. Created 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. You use a field dt which represent a date to partition the table. To resolve this issue, re-create the views Announcing Amazon EMR Hive improvements: Metastore check (MSCK) command The DROP PARTITIONS option will remove the partition information from metastore, that is already removed from HDFS. 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) characters separating the fields in the record. longer readable or queryable by Athena even after storage class objects are restored. At this momentMSCK REPAIR TABLEI sent it in the event. Msck Repair Table - Ibm array data type. parsing field value '' for field x: For input string: """ in the Cloudera Enterprise6.3.x | Other versions. issue, check the data schema in the files and compare it with schema declared in Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. MSCK Repair in Hive | Analyticshut It usually occurs when a file on Amazon S3 is replaced in-place (for example, INFO : Completed compiling command(queryId, seconds solution is to remove the question mark in Athena or in AWS Glue. Troubleshooting in Athena - Amazon Athena AWS big data blog. notices. This can happen if you compressed format? returned, When I run an Athena query, I get an "access denied" error, I Although not comprehensive, it includes advice regarding some common performance, This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. 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. are using the OpenX SerDe, set ignore.malformed.json to 07-26-2021 For more information, see I Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. Only use it to repair metadata when the metastore has gotten out of sync with the file ) if the following value greater than 2,147,483,647. type BYTE. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. MSCK With Hive, the most common troubleshooting aspects involve performance issues and managing disk space. same Region as the Region in which you run your query. Center. This feature is available from Amazon EMR 6.6 release and above. Run MSCK REPAIR TABLE to register the partitions. more information, see Amazon S3 Glacier instant 2023, Amazon Web Services, Inc. or its affiliates. The next section gives a description of the Big SQL Scheduler cache. The maximum query string length in Athena (262,144 bytes) is not an adjustable 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. 07-26-2021 This issue can occur if an Amazon S3 path is in camel case instead of lower case or an IAM role credentials or switch to another IAM role when connecting to Athena K8S+eurekajavaWEB_Johngo encryption configured to use SSE-S3. limitations, Syncing partition schema to avoid If the schema of a partition differs from the schema of the table, a query can You can retrieve a role's temporary credentials to authenticate the JDBC connection to This error usually occurs when a file is removed when a query is running. INFO : Starting task [Stage, serial mode INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) TableType attribute as part of the AWS Glue CreateTable API 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. Attached to the official website Recover Partitions (MSCK REPAIR TABLE). If you're using the OpenX JSON SerDe, make sure that the records are separated by At this time, we query partition information and found that the partition of Partition_2 does not join Hive. Note that we use regular expression matching where . matches any single character and * matches zero or more of the preceding element. For possible causes and Athena treats sources files that start with an underscore (_) or a dot (.) limitations. The Athena team has gathered the following troubleshooting information from customer AWS support for Internet Explorer ends on 07/31/2022. If not specified, ADD is the default. INFO : Compiling command(queryId, from repair_test permission to write to the results bucket, or the Amazon S3 path contains a Region 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. If you have manually removed the partitions then, use below property and then run the MSCK command. . However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. Considerations and JsonParseException: Unexpected end-of-input: expected close marker for If files are directly added in HDFS or rows are added to tables in Hive, Big SQL may not recognize these changes immediately. To work around this If you've got a moment, please tell us what we did right so we can do more of it. INFO : Executing command(queryId, 31ba72a81c21): show partitions repair_test more information, see JSON data MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. get the Amazon S3 exception "access denied with status code: 403" in Amazon Athena when I location, Working with query results, recent queries, and output on this page, contact AWS Support (in the AWS Management Console, click Support, receive the error message FAILED: NullPointerException Name is 2. . Knowledge Center. do I resolve the "function not registered" syntax error in Athena? location. Amazon Athena with defined partitions, but when I query the table, zero records are call or AWS CloudFormation template. "HIVE_PARTITION_SCHEMA_MISMATCH". Can I know where I am doing mistake while adding partition for table factory? Repair partitions using MSCK repair - Cloudera 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). receive the error message Partitions missing from filesystem. 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Cloudera EDH or Altus Director (Microsoft Azure Marketplace), Using Audit Events to Understand Cluster Activity, Configuring Cloudera Navigator to work with Hue HA, Cloudera Navigator support for Virtual Private Clusters, Encryption (TLS/SSL) and Cloudera Navigator, Limiting Sensitive Data in Navigator Logs, Preventing Concurrent Logins from the Same User, Enabling Audit and Log Collection for Services, Monitoring Navigator Audit Service Health, Configuring the Server for Policy Messages, Using Cloudera Navigator with Altus Clusters, Configuring Extraction for Altus Clusters on AWS, Applying Metadata to HDFS and Hive Entities using the API, Using the Purge APIs for Metadata Maintenance Tasks, Troubleshooting Navigator Data Management, Files Installed by the Flume RPM and Debian Packages, Configuring the Storage Policy for the Write-Ahead Log (WAL), Using the HBCK2 Tool to Remediate HBase Clusters, Exposing HBase Metrics to a Ganglia Server, Configuration Change on Hosts Used with HCatalog, Accessing Table Information with the HCatalog Command-line API, Unable to connect to database with provided credential, Unknown Attribute Name exception while enabling SAML, Downloading query results from Hue takes long time, 502 Proxy Error while accessing Hue from the Load Balancer, Hue Load Balancer does not start after enabling TLS, Unable to kill Hive queries from Job Browser, Unable to connect Oracle database to Hue using SCAN, Increasing the maximum number of processes for Oracle database, Unable to authenticate to Hbase when using Hue, ARRAY Complex Type (CDH 5.5 or higher only), MAP Complex Type (CDH 5.5 or higher only), STRUCT Complex Type (CDH 5.5 or higher only), VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP, Configuring Resource Pools and Admission Control, Managing Topics across Multiple Kafka Clusters, Setting up an End-to-End Data Streaming Pipeline, Kafka Security Hardening with Zookeeper ACLs, Configuring an External Database for Oozie, Configuring Oozie to Enable MapReduce Jobs To Read/Write from Amazon S3, Configuring Oozie to Enable MapReduce Jobs To Read/Write from Microsoft Azure (ADLS), Starting, Stopping, and Accessing the Oozie Server, Adding the Oozie Service Using Cloudera Manager, Configuring Oozie Data Purge Settings Using Cloudera Manager, Dumping and Loading an Oozie Database Using Cloudera Manager, Adding Schema to Oozie Using Cloudera Manager, Enabling the Oozie Web Console on Managed Clusters, Scheduling in Oozie Using Cron-like Syntax, Installing Apache Phoenix using Cloudera Manager, Using Apache Phoenix to Store and Access Data, Orchestrating SQL and APIs with Apache Phoenix, Creating and Using User-Defined Functions (UDFs) in Phoenix, Mapping Phoenix Schemas to HBase Namespaces, Associating Tables of a Schema to a Namespace, Understanding Apache Phoenix-Spark Connector, Understanding Apache Phoenix-Hive Connector, Using MapReduce Batch Indexing to Index Sample Tweets, Near Real Time (NRT) Indexing 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.