[
https://issues.apache.org/jira/browse/SPARK-38771?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yuming Wang updated SPARK-38771:
--------------------------------
Description:
Insert a bloom filter on one side of the join if it may be spill when sorting
and the other side less than 100000000L rows.
A special case:
{code:java}
sql("set spark.sql.autoBroadcastJoinThreshold=10000")
sql("CREATE TABLE t1 using parquet AS SELECT id AS a, id AS b, id AS c FROM
range(200000000L)")
sql("CREATE TABLE t2 using parquet AS SELECT id AS x, id AS y FROM
range(8000000)")
sql("""SELECT a, b, c, x, y FROM t1 JOIN t2 ON t1.a = t2.x where t2.y =
1""").collect()
{code}
!Special case.png!
was:
Insert a bloom filter on one side of the join if it may be spill when sorting
and the other side less than 100000000L rows.
A special case:
{code:java}
sql("set spark.sql.autoBroadcastJoinThreshold=10000")
sql("CREATE TABLE t1 using parquet AS SELECT id AS a, id AS b, id AS c FROM
range(200000000L)")
sql("CREATE TABLE t2 using parquet AS SELECT id AS x, id AS y FROM
range(8000000)")
sql("""SELECT a, b, c, x, y FROM t1 JOIN t2 ON t1.a = t2.x where t2.y =
1""").collect()
{code}
> Introduce adaptive Bloom filter Join to reduce spilling to disk when doing
> SortMergeJoin
> -----------------------------------------------------------------------------------------
>
> Key: SPARK-38771
> URL: https://issues.apache.org/jira/browse/SPARK-38771
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 3.4.0
> Reporter: Yuming Wang
> Priority: Major
> Attachments: Special case.png
>
>
> Insert a bloom filter on one side of the join if it may be spill when sorting
> and the other side less than 100000000L rows.
> A special case:
> {code:java}
> sql("set spark.sql.autoBroadcastJoinThreshold=10000")
> sql("CREATE TABLE t1 using parquet AS SELECT id AS a, id AS b, id AS c FROM
> range(200000000L)")
> sql("CREATE TABLE t2 using parquet AS SELECT id AS x, id AS y FROM
> range(8000000)")
> sql("""SELECT a, b, c, x, y FROM t1 JOIN t2 ON t1.a = t2.x where t2.y =
> 1""").collect()
> {code}
> !Special case.png!
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
