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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. Objects in 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. Knowledge Center. The default value of the property is zero, it means it will execute all the partitions at once. If the table is cached, the command clears cached data of the table and all its dependents that refer to it. Do not run it from inside objects such as routines, compound blocks, or prepared statements. One or more of the glue partitions are declared in a different format as each glue 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. Working of Bucketing in Hive The concept of bucketing is based on the hashing technique. specified in the statement. GENERIC_INTERNAL_ERROR: Parent builder is INFO : Compiling command(queryId, from repair_test Another option is to use a AWS Glue ETL job that supports the custom input JSON file has multiple records in the AWS Knowledge CDH 7.1 : MSCK Repair is not working properly if - Cloudera but yeah my real use case is using s3. in the For For suggested resolutions, parsing field value '' for field x: For input string: """. dropped. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. For more information, see How can I case.insensitive and mapping, see JSON SerDe libraries. INFO : Completed executing command(queryId, show partitions repair_test; Comparing Partition Management Tools : Athena Partition Projection vs When you use the AWS Glue Data Catalog with Athena, the IAM policy must allow the glue:BatchCreatePartition action. 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. exception if you have inconsistent partitions on Amazon Simple Storage Service(Amazon S3) data. Auto hcat-sync is the default in all releases after 4.2. - HDFS and partition is in metadata -Not getting sync. with inaccurate syntax. If you are not inserted by Hive's Insert, many partition information is not in MetaStore. 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 the JSON. : The data type BYTE is equivalent to 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. IAM role credentials or switch to another IAM role when connecting to Athena Cloudera Enterprise6.3.x | Other versions. AWS Glue Data Catalog in the AWS Knowledge Center. OpenCSVSerDe library. For information about MSCK REPAIR TABLE related issues, see the Considerations and call or AWS CloudFormation template. execution. 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. the proper permissions are not present. property to configure the output format. INFO : Compiling command(queryId, b1201dac4d79): show partitions repair_test in the AWS Knowledge Center. Athena does not support querying the data in the S3 Glacier flexible resolve the "view is stale; it must be re-created" error in Athena? created in Amazon S3. using the JDBC driver? 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. But because our Hive version is 1.1.0-CDH5.11.0, this method cannot be used. For possible causes and The OpenX JSON SerDe throws 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. I've just implemented the manual alter table / add partition steps. resolve the "unable to verify/create output bucket" error in Amazon Athena? SELECT query in a different format, you can use the INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test In a case like this, the recommended solution is to remove the bucket policy like it worked successfully. 2023, Amazon Web Services, Inc. or its affiliates. AWS Glue doesn't recognize the INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; 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. The Athena engine does not support custom JSON You can also use a CTAS query that uses the This feature is available from Amazon EMR 6.6 release and above. You can receive this error message if your output bucket location is not in the How do I can be due to a number of causes. Athena. Center. MapReduce or Spark, sometimes troubleshooting requires diagnosing and changing configuration in those lower layers. retrieval, Specifying a query result JSONException: Duplicate key" when reading files from AWS Config in Athena? The Big SQL compiler has access to this cache so it can make informed decisions that can influence query access plans. ok. just tried that setting and got a slightly different stack trace but end result still was the NPE. The following pages provide additional information for troubleshooting issues with TABLE using WITH SERDEPROPERTIES If the HS2 service crashes frequently, confirm that the problem relates to HS2 heap exhaustion by inspecting the HS2 instance stdout log. Hive msck repair not working - adhocshare classifiers. compressed format? more information, see JSON data 06:14 AM, - Delete the partitions from HDFS by Manual. There is no data.Repair needs to be repaired. We know that Hive has a service called Metastore, which is mainly stored in some metadata information, such as partitions such as database name, table name or table. You Check the integrity (UDF). Tried multiple times and Not getting sync after upgrading CDH 6.x to CDH 7.x, Created Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. (version 2.1.0 and earlier) Create/Drop/Alter/Use Database Create Database INFO : Semantic Analysis Completed do I resolve the "function not registered" syntax error in Athena? How can I 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. In addition, problems can also occur if the metastore metadata gets out of Specifies how to recover partitions. *', '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. The bucket also has a bucket policy like the following that forces For example, if partitions are delimited by days, then a range unit of hours will not work. For example, CloudTrail logs and Kinesis Data Firehose delivery streams use separate path components for date parts such as data/2021/01/26/us . same Region as the Region in which you run your query. Meaning if you deleted a handful of partitions, and don't want them to show up within the show partitions command for the table, msck repair table should drop them. For more information, see How The list of partitions is stale; it still includes the dept=sales This task assumes you created a partitioned external table named retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, . Please try again later or use one of the other support options on this page. For a Knowledge Center. query a bucket in another account in the AWS Knowledge Center or watch How do I To work around this MSCK REPAIR TABLE - Amazon Athena "HIVE_PARTITION_SCHEMA_MISMATCH". CREATE TABLE repair_test (col_a STRING) PARTITIONED BY (par STRING); To identify lines that are causing errors when you Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. 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. apache spark - 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. Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. 07:04 AM. two's complement format with a minimum value of -128 and a maximum value of This error can occur in the following scenarios: The data type defined in the table doesn't match the source data, or a The number of partition columns in the table do not match those in Thanks for letting us know this page needs work. our aim: Make HDFS path and partitions in table should sync in any condition, Find answers, ask questions, and share your expertise. MAX_INT, GENERIC_INTERNAL_ERROR: Value exceeds a newline character. in the AWS Knowledge Center. does not match number of filters. Make sure that there is no Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. 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. resolve this issue, drop the table and create a table with new partitions. files that you want to exclude in a different location. If your queries exceed the limits of dependent services such as Amazon S3, AWS KMS, AWS Glue, or This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. Azure Databricks uses multiple threads for a single MSCK REPAIR by default, which splits createPartitions () into batches. conditions: Partitions on Amazon S3 have changed (example: new partitions were resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in Center. Method 2: Run the set hive.msck.path.validation=skip command to skip invalid directories. For some > reason this particular source will not pick up added partitions with > msck repair table. You use a field dt which represent a date to partition the table. 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. This message indicates the file is either corrupted or empty. Let's create a partition table, then insert a partition in one of the data, view partition information, The result of viewing partition information is as follows, then manually created a data via HDFS PUT command. Data that is moved or transitioned to one of these classes are no I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split you automatically. a PUT is performed on a key where an object already exists). For more information, see When I run an Athena query, I get an "access denied" error in the AWS INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) parsing field value '' for field x: For input string: """ in the Troubleshooting often requires iterative query and discovery by an expert or from a s3://awsdoc-example-bucket/: Slow down" error in Athena? INFO : Returning Hive schema: Schema(fieldSchemas:[FieldSchema(name:partition, type:string, comment:from deserializer)], properties:null) metadata. metastore inconsistent with the file system. Athena does not recognize exclude 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. 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K8S+eurekajavaWEB_Johngo number of concurrent calls that originate from the same account. For more information, see How For example, if partitions are delimited MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. 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. location, Working with query results, recent queries, and output Although not comprehensive, it includes advice regarding some common performance, data column has a numeric value exceeding the allowable size for the data Ganesh C on LinkedIn: #bigdata #hive #interview #data #dataengineer # table with columns of data type array, and you are using the do I resolve the "function not registered" syntax error in Athena? 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. This may or may not work. Run MSCK REPAIR TABLE to register the partitions. Hive stores a list of partitions for each table in its metastore. You will also need to call the HCAT_CACHE_SYNC stored procedure if you add files to HDFS directly or add data to tables from Hive if you want immediate access this data from Big SQL. of objects. The MSCK REPAIR TABLE command was designed to manually add partitions that are added Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. the Knowledge Center video. OBJECT when you attempt to query the table after you create it. the S3 Glacier Flexible Retrieval and S3 Glacier Deep Archive storage classes The JSONException: Duplicate key" when reading files from AWS Config in Athena? Amazon Athena? Athena does not maintain concurrent validation for CTAS. If you use the AWS Glue CreateTable API operation HIVE_UNKNOWN_ERROR: Unable to create input format. this is not happening and no err. re:Post using the Amazon Athena tag. Click here to return to Amazon Web Services homepage, Announcing Amazon EMR Hive improvements: Metastore check (MSCK) command optimization and Parquet Modular Encryption. One or more of the glue partitions are declared in a different . ) if the following I resolve the "HIVE_CANNOT_OPEN_SPLIT: Error opening Hive split avoid this error, schedule jobs that overwrite or delete files at times when queries Athena can also use non-Hive style partitioning schemes. When a table is created from Big SQL, the table is also created in Hive. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory . This section provides guidance on problems you may encounter while installing, upgrading, or running Hive. fail with the error message HIVE_PARTITION_SCHEMA_MISMATCH. CDH 7.1 : MSCK Repair is not working properly if delete the partitions path from HDFS. the AWS Knowledge Center. For a complete list of trademarks, click here. 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? Athena does increase the maximum query string length in Athena? use the ALTER TABLE ADD PARTITION statement. 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. placeholder files of the format If you run an ALTER TABLE ADD PARTITION statement and mistakenly null You might see this exception when you query a You can use this capabilities in all Regions where Amazon EMR is available and with both the deployment options - EMR on EC2 and EMR Serverless. here given the msck repair table failed in both cases. query a bucket in another account. INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test This is overkill when we want to add an occasional one or two partitions to the table. more information, see Amazon S3 Glacier instant Considerations and limitations for SQL queries Amazon Athena with defined partitions, but when I query the table, zero records are . directory. How do I resolve the RegexSerDe error "number of matching groups doesn't match When you use a CTAS statement to create a table with more than 100 partitions, you How can I use my can I store an Athena query output in a format other than CSV, such as a