Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/19560#discussion_r146319070
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
@@ -187,6 +187,15 @@ object SQLConf {
.booleanConf
.createWithDefault(false)
+ val VERIFY_STATS_FROM_HDFS_WHEN_BROADCASTJOIN =
+ buildConf("spark.sql.statistics.verifyStatsFromHdfsWhenBroadcastJoin")
+ .doc("If table size in metastore is below
spark.sql.autoBroadcastJoinThreshold, check the " +
+ "size on Hdfs and set table size to be the bigger one. This is for
defense and help avoid" +
+ " OOM caused by broadcast join. It's useful when metastore failed to
update the stats of" +
--- End diff --
Hi, @jinxing64 .
Is this helpful for highly compressed Parquet tables, too?
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