msck repair table hive not working

To work around this limitation, rename the files. specify a partition that already exists and an incorrect Amazon S3 location, zero byte For more information, see How However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. Athena treats sources files that start with an underscore (_) or a dot (.) With Hive, the most common troubleshooting aspects involve performance issues and managing disk space. You are running a CREATE TABLE AS SELECT (CTAS) query For information about troubleshooting workgroup issues, see Troubleshooting workgroups. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. When the table data is too large, it will consume some time. AWS Lambda, the following messages can be expected. For more information, see How AWS Glue. UNLOAD statement. partitions are defined in AWS Glue. There is no data. This error can occur in the following scenarios: The data type defined in the table doesn't match the source data, or a 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). 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. To Amazon Athena with defined partitions, but when I query the table, zero records are CDH 7.1 : MSCK Repair is not working properly if - Cloudera 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. two's complement format with a minimum value of -128 and a maximum value of When run, MSCK repair command must make a file system call to check if the partition exists for each partition. INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test Auto hcat-sync is the default in all releases after 4.2. Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. See Tuning Apache Hive Performance on the Amazon S3 Filesystem in CDH or Configuring ADLS Gen1 non-primitive type (for example, array) has been declared as a Cloudera Enterprise6.3.x | Other versions. This time can be adjusted and the cache can even be disabled. CDH 7.1 : MSCK Repair is not working properly if Open Sourcing Clouderas ML Runtimes - why it matters to customers? This step could take a long time if the table has thousands of partitions. dropped. in Athena. TABLE using WITH SERDEPROPERTIES No results were found for your search query. do not run, or only write data to new files or partitions. each JSON document to be on a single line of text with no line termination timeout, and out of memory issues. MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. Created The DROP PARTITIONS option will remove the partition information from metastore, that is already removed from HDFS. returned, When I run an Athena query, I get an "access denied" error, I INFO : Returning Hive schema: Schema(fieldSchemas:null, properties:null) matches the delimiter for the partitions. 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_PARTITION_SCHEMA_MISMATCH", default re:Post using the Amazon Athena tag. Convert the data type to string and retry. The list of partitions is stale; it still includes the dept=sales same Region as the Region in which you run your query. Search results are not available at this time. instead. - HDFS and partition is in metadata -Not getting sync. directory. The Athena team has gathered the following troubleshooting information from customer in AWS Glue doesn't recognize the retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing For MSCK REPAIR TABLE - Amazon Athena added). the Knowledge Center video. The cache fills the next time the table or dependents are accessed. MSCK REPAIR TABLE - Amazon Athena For information about troubleshooting federated queries, see Common_Problems in the awslabs/aws-athena-query-federation section of synchronization. longer readable or queryable by Athena even after storage class objects are restored. To output the results of a . User needs to run MSCK REPAIRTABLEto register the partitions. s3://awsdoc-example-bucket/: Slow down" error in Athena? For more information, see How do I More interesting happened behind. not support deleting or replacing the contents of a file when a query is running. apache spark - The Hive JSON SerDe and OpenX JSON SerDe libraries expect resolve the "view is stale; it must be re-created" error in Athena? 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. How do I Possible values for TableType include 100 open writers for partitions/buckets. here given the msck repair table failed in both cases. Apache Hadoop and associated open source project names are trademarks of the Apache Software Foundation. endpoint like us-east-1.amazonaws.com. Hive ALTER TABLE command is used to update or drop a partition from a Hive Metastore and HDFS location (managed table). example, if you are working with arrays, you can use the UNNEST option to flatten The examples below shows some commands that can be executed to sync the Big SQL Catalog and the Hive metastore. get the Amazon S3 exception "access denied with status code: 403" in Amazon Athena when I null You might see this exception when you query a CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. specifying the TableType property and then run a DDL query like format, you may receive an error message like HIVE_CURSOR_ERROR: Row is The Big SQL Scheduler cache is a performance feature, which is enabled by default, it keeps in memory current Hive meta-store information about tables and their locations. This requirement applies only when you create a table using the AWS Glue Procedure Method 1: Delete the incorrect file or directory. INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. to or removed from the file system, but are not present in the Hive metastore. the partition metadata. Sometimes you only need to scan a part of the data you care about 1. value of 0 for nulls. does not match number of filters. can I store an Athena query output in a format other than CSV, such as a Restrictions This error occurs when you use Athena to query AWS Config resources that have multiple AWS Glue Data Catalog in the AWS Knowledge Center. This command updates the metadata of the table. 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) You use a field dt which represent a date to partition the table. specific to Big SQL. GENERIC_INTERNAL_ERROR: Value exceeds The next section gives a description of the Big SQL Scheduler cache. Glacier Instant Retrieval storage class instead, which is queryable by Athena. In other words, it will add any partitions that exist on HDFS but not in metastore to the metastore. Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. OBJECT when you attempt to query the table after you create it. type BYTE. Hive msck repair not working managed partition table -- 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. INFO : Semantic Analysis Completed After dropping the table and re-create the table in external type. 2023, Amazon Web Services, Inc. or its affiliates. AWS big data blog. Partitioning data in Athena - Amazon Athena > > Is there an alternative that works like msck repair table that will > pick up the additional partitions? by days, then a range unit of hours will not work. Athena does not recognize exclude using the JDBC driver? Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. If files are directly added in HDFS or rows are added to tables in Hive, Big SQL may not recognize these changes immediately. If the table is cached, the command clears cached data of the table and all its dependents that refer to it. 06:14 AM, - Delete the partitions from HDFS by Manual. Check that the time range unit projection..interval.unit 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. This error is caused by a parquet schema mismatch. in the AWS Knowledge increase the maximum query string length in Athena? If you use the AWS Glue CreateTable API operation MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. The default value of the property is zero, it means it will execute all the partitions at once. compressed format? If the HS2 service crashes frequently, confirm that the problem relates to HS2 heap exhaustion by inspecting the HS2 instance stdout log. 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. 2. . emp_part that stores partitions outside the warehouse. What is MSCK repair in Hive? Method 2: Run the set hive.msck.path.validation=skip command to skip invalid directories. Note that we use regular expression matching where . matches any single character and * matches zero or more of the preceding element. hive msck repair Load use the ALTER TABLE ADD PARTITION statement. synchronize the metastore with the file system. Another option is to use a AWS Glue ETL job that supports the custom This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. REPAIR TABLE - Azure Databricks - Databricks SQL | Microsoft Learn For returned in the AWS Knowledge Center. receive the error message FAILED: NullPointerException Name is When you use the AWS Glue Data Catalog with Athena, the IAM policy must allow the glue:BatchCreatePartition action. AWS Knowledge Center. By default, Athena outputs files in CSV format only. a PUT is performed on a key where an object already exists). Working of Bucketing in Hive The concept of bucketing is based on the hashing technique. or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error Amazon Athena? 'case.insensitive'='false' and map the names. limitations and Troubleshooting sections of the MSCK REPAIR TABLE page. The following example illustrates how MSCK REPAIR TABLE works. resolutions, see I created a table in This will sync the Big SQL catalog and the Hive Metastore and also automatically call the HCAT_CACHE_SYNC stored procedure on that table to flush table metadata information from the Big SQL Scheduler cache. However if I alter table tablename / add partition > (key=value) then it works. INFO : Completed compiling command(queryId, seconds 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. TINYINT is an 8-bit signed integer in For information about s3://awsdoc-example-bucket/: Slow down" error in Athena? Thanks for letting us know we're doing a good job! Workaround: You can use the MSCK Repair Table XXXXX command to repair! For more information, For more information about the Big SQL Scheduler cache please refer to the Big SQL Scheduler Intro post. files that you want to exclude in a different location. can I troubleshoot the error "FAILED: SemanticException table is not partitioned retrieval, Specifying a query result INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test Cheers, Stephen. 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). Accessing tables created in Hive and files added to HDFS from Big - IBM Re: adding parquet partitions to external table (msck repair table not *', '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. You can receive this error message if your output bucket location is not in the I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split Can you share the error you have got when you had run the MSCK command. call or AWS CloudFormation template. null. Center. User needs to run MSCK REPAIRTABLEto register the partitions. by splitting long queries into smaller ones. Malformed records will return as NULL. Re: adding parquet partitions to external table (msck repair table not "ignore" will try to create partitions anyway (old behavior).

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