[jira] [Updated] (SPARK-38230) InsertIntoHadoopFsRelationCommand unnecessarily fetches details of partitions in most cases

["Gabor Roczei (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-38230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Roczei updated SPARK-38230:
---------------------------------
    Affects Version/s: 3.3.0
                       3.4.0
                       3.5.0

> InsertIntoHadoopFsRelationCommand unnecessarily fetches details of partitions in most cases
> -------------------------------------------------------------------------------------------
>
>                 Key: SPARK-38230
>                 URL: https://issues.apache.org/jira/browse/SPARK-38230
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.2, 3.3.0, 3.4.0, 3.5.0
>            Reporter: Coal Chan
>            Priority: Major
>
> In `org.apache.spark.sql.execution.datasources.InsertIntoHadoopFsRelationCommand`, `sparkSession.sessionState.catalog.listPartitions` will call method `org.apache.hadoop.hive.metastore.listPartitionsPsWithAuth` of hive metastore client, this method will produce multiple queries per partition on hive metastore db. So when you insert into a table which has too many partitions(ie: 10k), it will produce too many queries on hive metastore db(ie: n * 10k = 10nk), it puts a lot of strain on the database.
> In fact, it calls method `listPartitions` in order to get locations of partitions and get `customPartitionLocations`. But in most cases, we do not have custom partitions, we can just get partition names, so we can call method listPartitionNames.



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org