[jira] [Assigned] (SPARK-25740) Set some configuration need invalidateStatsCache

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-25740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-25740:
------------------------------------

    Assignee: Apache Spark

> Set some configuration need invalidateStatsCache
> ------------------------------------------------
>
>                 Key: SPARK-25740
>                 URL: https://issues.apache.org/jira/browse/SPARK-25740
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Yuming Wang
>            Assignee: Apache Spark
>            Priority: Major
>
> How to reproduce:
> {code:sql}
> # spark-sql
> create table t1 (a int) stored as parquet;
> create table t2 (a int) stored as parquet;
> insert into table t1 values (1);
> insert into table t2 values (1);
> explain select * from t1, t2 where t1.a = t2.a;
> exit;
> spark-sql
> explain select * from t1, t2 where t1.a = t2.a;
> -- SortMergeJoin
> set spark.sql.statistics.fallBackToHdfs=true;
> explain select * from t1, t2 where t1.a = t2.a;
> -- SortMergeJoin, it should be BroadcastHashJoin
> exit;
> spark-sql
> set spark.sql.statistics.fallBackToHdfs=true;
> explain select * from t1, t2 where t1.a = t2.a;
> -- BroadcastHashJoin
> {code}
> We need {{LogicalPlanStats.invalidateStatsCache}}, but seems only we can do is invalidateAllCachedTables when execute set Command:
> {code}
> val isInvalidateAllCachedTablesKeys = Set(
>   SQLConf.ENABLE_FALL_BACK_TO_HDFS_FOR_STATS.key,
>   SQLConf.DEFAULT_SIZE_IN_BYTES.key
> )
> sparkSession.conf.set(key, value)
> if (isInvalidateAllCachedTablesKeys.contains(key)) {
>   sparkSession.sessionState.catalog.invalidateAllCachedTables()
> }
> {code}



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