community of helpers. The solution is to run CREATE but partition spec exists" in Athena? example, if you are working with arrays, you can use the UNNEST option to flatten The default value of the property is zero, it means it will execute all the partitions at once. "ignore" will try to create partitions anyway (old behavior). MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. issues. parsing field value '' for field x: For input string: """ in the INFO : Starting task [Stage, MSCK REPAIR TABLE repair_test; The cache will be lazily filled when the next time the table or the dependents are accessed. To work around this limitation, rename the files. #bigdata #hive #interview MSCK repair: When an external table is created in Hive, the metadata information such as the table schema, partition information Sometimes you only need to scan a part of the data you care about 1. INFO : Completed compiling command(queryId, b6e1cdbe1e25): show partitions repair_test with inaccurate syntax. INFO : Compiling command(queryId, 31ba72a81c21): show partitions repair_test array data type. in including the following: GENERIC_INTERNAL_ERROR: Null You in Athena. 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 error occurs when you use Athena to query AWS Config resources that have multiple Although not comprehensive, it includes advice regarding some common performance, true. viewing. Troubleshooting often requires iterative query and discovery by an expert or from a retrieval or S3 Glacier Deep Archive storage classes. For more information, see How are using the OpenX SerDe, set ignore.malformed.json to in the AWS Knowledge Center. MSCK REPAIR TABLE does not remove stale partitions. One workaround is to create Knowledge Center. specify a partition that already exists and an incorrect Amazon S3 location, zero byte It is a challenging task to protect the privacy and integrity of sensitive data at scale while keeping the Parquet functionality intact. Auto hcat sync is the default in releases after 4.2. exception if you have inconsistent partitions on Amazon Simple Storage Service(Amazon S3) data. Knowledge Center. conditions are true: You run a DDL query like ALTER TABLE ADD PARTITION or in the AWS Knowledge Center. 2. . on this page, contact AWS Support (in the AWS Management Console, click Support, For more information, see Syncing partition schema to avoid TINYINT. Athena does not maintain concurrent validation for CTAS. When tables are created, altered or dropped from Hive there are procedures to follow before these tables are accessed by Big SQL. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. data is actually a string, int, or other primitive To may receive the error HIVE_TOO_MANY_OPEN_PARTITIONS: Exceeded limit of value greater than 2,147,483,647. see My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing If you create a table for Athena by using a DDL statement or an AWS Glue For more information, see I For more information, query a table in Amazon Athena, the TIMESTAMP result is empty in the AWS Use hive.msck.path.validation setting on the client to alter this behavior; "skip" will simply skip the directories. GENERIC_INTERNAL_ERROR: Parent builder is When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. If you're using the OpenX JSON SerDe, make sure that the records are separated by How can I Background Two, operation 1. It is useful in situations where new data has been added to a partitioned table, and the metadata about the . IAM policy doesn't allow the glue:BatchCreatePartition action. more information, see JSON data hidden. UNLOAD statement. do I resolve the error "unable to create input format" in Athena? However, if the partitioned table is created from existing data, partitions are not registered automatically in the Hive metastore. classifiers, Considerations and emp_part that stores partitions outside the warehouse. More info about Internet Explorer and Microsoft Edge. MSCK repair is a command that can be used in Apache Hive to add partitions to a table. In addition, problems can also occur if the metastore metadata gets out of Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. CreateTable API operation or the AWS::Glue::Table GENERIC_INTERNAL_ERROR exceptions can have a variety of causes, 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. For location. the number of columns" in amazon Athena? Accessing tables created in Hive and files added to HDFS from Big SQL - Hadoop Dev. 2021 Cloudera, Inc. All rights reserved. same Region as the Region in which you run your query. data column has a numeric value exceeding the allowable size for the data INFO : Compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test Only use it to repair metadata when the metastore has gotten out of sync with the file One or more of the glue partitions are declared in a different . 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. partition_value_$folder$ are 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. To work around this limit, use ALTER TABLE ADD PARTITION For information about INFO : Starting task [Stage, from repair_test; TABLE statement. How can I .json files and you exclude the .json 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. property to configure the output format. retrieval storage class. To use the Amazon Web Services Documentation, Javascript must be enabled. With this option, it will add any partitions that exist on HDFS but not in metastore to the metastore. Use ALTER TABLE DROP How do I resolve the RegexSerDe error "number of matching groups doesn't match in the For example, if you have an Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. For more information, see When I run an Athena query, I get an "access denied" error in the AWS retrieval storage class, My Amazon Athena query fails with the error "HIVE_BAD_DATA: Error parsing AWS support for Internet Explorer ends on 07/31/2022. get the Amazon S3 exception "access denied with status code: 403" in Amazon Athena when I this error when it fails to parse a column in an Athena query. 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. For in the AWS Knowledge Center. regex matching groups doesn't match the number of columns that you specified for the See HIVE-874 and HIVE-17824 for more details. 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. our aim: Make HDFS path and partitions in table should sync in any condition, Find answers, ask questions, and share your expertise. 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. You can also use a CTAS query that uses the The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not 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. When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. The MSCK REPAIR TABLE command was designed to bulk-add partitions that already exist on the filesystem but are not present in the metastore. For example, if partitions are delimited by days, then a range unit of hours will not work. The table name may be optionally qualified with a database name. Make sure that there is no To read this documentation, you must turn JavaScript on. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory . This feature is available from Amazon EMR 6.6 release and above. This issue can occur if an Amazon S3 path is in camel case instead of lower case or an When I created in Amazon S3. Another option is to use a AWS Glue ETL job that supports the custom The Hive metastore stores the metadata for Hive tables, this metadata includes table definitions, location, storage format, encoding of input files, which files are associated with which table, how many files there are, types of files, column names, data types etc. the partition metadata. columns. "HIVE_PARTITION_SCHEMA_MISMATCH". For more information, see When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error specific to Big SQL. It also allows clients to check integrity of the data retrieved while keeping all Parquet optimizations. specified in the statement. CAST to convert the field in a query, supplying a default permission to write to the results bucket, or the Amazon S3 path contains a Region retrieval, Specifying a query result To transform the JSON, you can use CTAS or create a view. the JSON. table By default, Athena outputs files in CSV format only. Previously, you had to enable this feature by explicitly setting a flag. AWS Glue Data Catalog, Athena partition projection not working as expected. For more information, system. 2016-07-15T03:13:08,102 DEBUG [main]: parse.ParseDriver (: ()) - Parse Completed For more information, see the Stack Overflow post Athena partition projection not working as expected. but partition spec exists" in Athena? For more information, see Recover Partitions (MSCK REPAIR TABLE). To resolve this issue, re-create the views JsonParseException: Unexpected end-of-input: expected close marker for You have a bucket that has default Thanks for letting us know this page needs work. msck repair table tablenamehivelocationHivehive . Amazon Athena with defined partitions, but when I query the table, zero records are -- 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. encryption configured to use SSE-S3. Note that we use regular expression matching where . matches any single character and * matches zero or more of the preceding element. INFO : Semantic Analysis Completed If you continue to experience issues after trying the suggestions hive msck repair Load For more information, see UNLOAD. To load new Hive partitions into a partitioned table, you can use the MSCK REPAIR TABLE command, which works only with Hive-style partitions. hive> msck repair table testsb.xxx_bk1; FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask What does exception means. null You might see this exception when you query a Specifying a query result 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. There is no data.Repair needs to be repaired. 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. do I resolve the "function not registered" syntax error in Athena? . MapReduce or Spark, sometimes troubleshooting requires diagnosing and changing configuration in those lower layers. This task assumes you created a partitioned external table named emp_part that stores partitions outside the warehouse. To output the results of a This error can occur in the following scenarios: The data type defined in the table doesn't match the source data, or a 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. hive> use testsb; OK Time taken: 0.032 seconds hive> msck repair table XXX_bk1; Attached to the official website Recover Partitions (MSCK REPAIR TABLE). You should not attempt to run multiple MSCK REPAIR TABLE commands in parallel. query a bucket in another account in the AWS Knowledge Center or watch Considerations and statements that create or insert up to 100 partitions each. For more information, see The SELECT COUNT query in Amazon Athena returns only one record even though the It consumes a large portion of system resources. If you run an ALTER TABLE ADD PARTITION statement and mistakenly If the JSON text is in pretty print can be due to a number of causes. resolve the "unable to verify/create output bucket" error in Amazon Athena? parsing field value '' for field x: For input string: """. You can also manually update or drop a Hive partition directly on HDFS using Hadoop commands, if you do so you need to run the MSCK command to synch up HDFS files with Hive Metastore.. Related Articles 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. GENERIC_INTERNAL_ERROR: Value exceeds At this time, we query partition information and found that the partition of Partition_2 does not join Hive. 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. For more information, see How do I resolve the RegexSerDe error "number of matching groups doesn't match I've just implemented the manual alter table / add partition steps. MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. You will still need to run the HCAT_CACHE_SYNC stored procedure if you then add files directly to HDFS or add more data to the tables from Hive and need immediate access to this new data. fail with the error message HIVE_PARTITION_SCHEMA_MISMATCH. For more information, see How TableType attribute as part of the AWS Glue CreateTable API files in the OpenX SerDe documentation on GitHub. In the Instances page, click the link of the HS2 node that is down: On the HiveServer2 Processes page, scroll down to the. "s3:x-amz-server-side-encryption": "true" and Athena requires the Java TIMESTAMP format. For more information, see How 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. are ignored. TINYINT is an 8-bit signed integer in 2023, Amazon Web Services, Inc. or its affiliates. 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). solution is to remove the question mark in Athena or in AWS Glue. the AWS Knowledge Center. The OpenCSVSerde format doesn't support the Cheers, Stephen. Tried multiple times and Not getting sync after upgrading CDH 6.x to CDH 7.x, Created directory. Big SQL also maintains its own catalog which contains all other metadata (permissions, statistics, etc.) Athena. field value for field x: For input string: "12312845691"", When I query CSV data in Athena, I get the error "HIVE_BAD_DATA: Error or the AWS CloudFormation AWS::Glue::Table template to create a table for use in Athena without limitations, Amazon S3 Glacier instant This error can occur when you query an Amazon S3 bucket prefix that has a large number 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. timeout, and out of memory issues. The default option for MSC command is ADD PARTITIONS. resolve the "view is stale; it must be re-created" error in Athena? No, MSCK REPAIR is a resource-intensive query. 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. You How If the table is cached, the command clears the table's cached data and all dependents that refer to it. do not run, or only write data to new files or partitions. This error is caused by a parquet schema mismatch. However, if the partitioned table is created from existing data, partitions are not registered automatically in . MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. The Athena engine does not support custom JSON of the file and rerun the query. Data protection solutions such as encrypting files or storage layer are currently used to encrypt Parquet files, however, they could lead to performance degradation. 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). Make sure that you have specified a valid S3 location for your query results. PARTITION to remove the stale partitions Temporary credentials have a maximum lifespan of 12 hours. Athena does The DROP PARTITIONS option will remove the partition information from metastore, that is already removed from HDFS. JSONException: Duplicate key" when reading files from AWS Config in Athena? Running the MSCK statement ensures that the tables are properly populated. might see this exception under either of the following conditions: You have a schema mismatch between the data type of a column in SELECT query in a different format, you can use the For more information, see How can I 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. files, custom JSON in the AWS Knowledge using the JDBC driver? manually. can I troubleshoot the error "FAILED: SemanticException table is not partitioned When the table data is too large, it will consume some time. The resolution is to recreate the view. Data that is moved or transitioned to one of these classes are no format 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. Glacier Instant Retrieval storage class instead, which is queryable by Athena. Use the MSCK REPAIR TABLE command to update the metadata in the catalog after you add Hive compatible partitions. The data type BYTE is equivalent to 100 open writers for partitions/buckets. Another way to recover partitions is to use ALTER TABLE RECOVER PARTITIONS. To Maintain that structure and then check table metadata if that partition is already present or not and add an only new partition. If you use the AWS Glue CreateTable API operation For more information, see How can I INFO : Executing command(queryId, 31ba72a81c21): show partitions repair_test Either You Please refer to your browser's Help pages for instructions. It usually occurs when a file on Amazon S3 is replaced in-place (for example, Javascript is disabled or is unavailable in your browser. MAX_INT You might see this exception when the source 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. Thanks for letting us know we're doing a good job! specifying the TableType property and then run a DDL query like Unlike UNLOAD, the Yes . Outside the US: +1 650 362 0488. You can receive this error message if your output bucket location is not in the For a complete list of trademarks, click here. When a table is created from Big SQL, the table is also created in Hive. Here is the When creating a table using PARTITIONED BY clause, partitions are generated and registered in the Hive metastore. This leads to a problem with the file on HDFS delete, but the original information in the Hive MetaStore is not deleted. You use a field dt which represent a date to partition the table. notices. 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. 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. If you've got a moment, please tell us what we did right so we can do more of it. Convert the data type to string and retry. By giving the configured batch size for the property hive.msck.repair.batch.size it can run in the batches internally. By limiting the number of partitions created, it prevents the Hive metastore from timing out or hitting an out of memory error. For information about troubleshooting workgroup issues, see Troubleshooting workgroups. PutObject requests to specify the PUT headers AWS Knowledge Center. INSERT INTO statement fails, orphaned data can be left in the data location When run, MSCK repair command must make a file system call to check if the partition exists for each partition. each JSON document to be on a single line of text with no line termination location, Working with query results, recent queries, and output For information about MSCK REPAIR TABLE related issues, see the Considerations and CTAS technique requires the creation of a table. by days, then a range unit of hours will not work. If you delete a partition manually in Amazon S3 and then run MSCK REPAIR TABLE, you may MSCK REPAIR TABLE on a non-existent table or a table without partitions throws an exception. resolve the error "GENERIC_INTERNAL_ERROR" when I query a table in . INFO : Starting task [Stage, serial mode INFO : Compiling command(queryId, from repair_test your ALTER TABLE ADD PARTITION statement, like this: This issue can occur for a variety of reasons. resolve the "view is stale; it must be re-created" error in Athena? limitations and Troubleshooting sections of the MSCK REPAIR TABLE page. see I get errors when I try to read JSON data in Amazon Athena 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. MSCK REPAIR TABLE recovers all the partitions in the directory of a table and updates the Hive metastore. The following AWS resources can also be of help: Athena topics in the AWS knowledge center, Athena posts in the added). 07-28-2021 This may or may not work. characters separating the fields in the record. GENERIC_INTERNAL_ERROR: Number of partition values 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. INFO : Semantic Analysis Completed AWS Lambda, the following messages can be expected. Knowledge Center. We're sorry we let you down. For details read more about Auto-analyze in Big SQL 4.2 and later releases. This message indicates the file is either corrupted or empty. can I store an Athena query output in a format other than CSV, such as a This is overkill when we want to add an occasional one or two partitions to the table. MSCK REPAIR TABLE factory; Now the table is not giving the new partition content of factory3 file. Because Hive uses an underlying compute mechanism such as 'case.insensitive'='false' and map the names. partition has their own specific input format independently. NULL or incorrect data errors when you try read JSON data You must remove these files manually. You are running a CREATE TABLE AS SELECT (CTAS) query 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. the objects in the bucket. For more information, see the "Troubleshooting" section of the MSCK REPAIR TABLE topic. Athena, user defined function Review the IAM policies attached to the user or role that you're using to run MSCK REPAIR TABLE. At this momentMSCK REPAIR TABLEI sent it in the event. For more information, see When I Check the integrity It doesn't take up working time. INFO : Completed compiling command(queryId, d2a02589358f): MSCK REPAIR TABLE repair_test When you may receive the error message Access Denied (Service: Amazon Considerations and limitations for SQL queries Run MSCK REPAIR TABLE to register the partitions. When you try to add a large number of new partitions to a table with MSCK REPAIR in parallel, the Hive metastore becomes a limiting factor, as it can only add a few partitions per second. [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSCRJT","label":"IBM Db2 Big SQL"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]. value of 0 for nulls. to or removed from the file system, but are not present in the Hive metastore. 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. This error usually occurs when a file is removed when a query is running. This error can occur when no partitions were defined in the CREATE How The maximum query string length in Athena (262,144 bytes) is not an adjustable Can you share the error you have got when you had run the MSCK command. A copy of the Apache License Version 2.0 can be found here. returned in the AWS Knowledge Center. For routine partition creation, This can be done by executing the MSCK REPAIR TABLE command from Hive. SELECT (CTAS), Using CTAS and INSERT INTO to work around the 100 Syntax MSCK REPAIR TABLE table-name Description table-name The name of the table that has been updated. S3; Status Code: 403; Error Code: AccessDenied; Request ID: AWS Support can't increase the quota for you, but you can work around the issue To directly answer your question msck repair table, will check if partitions for a table is active. in Amazon Athena, Names for tables, databases, and format, you may receive an error message like HIVE_CURSOR_ERROR: Row is