HyukjinKwon commented on a change in pull request #23519: [SPARK-26601][SQL]
Make broadcast-exchange thread pool configurable
URL: https://github.com/apache/spark/pull/23519#discussion_r247748426
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/StaticSQLConf.scala
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@@ -126,4 +126,10 @@ object StaticSQLConf {
.intConf
.createWithDefault(1000)
+ val MAX_BROADCAST_EXCHANGE_THREADNUMBER =
+ buildStaticConf("spark.sql.broadcastExchange.maxThreadNumber")
+ .doc("MAX number of threads can hold by BroadcastExchangeExec which
controls" +
Review comment:
Still, users won't know what's `BroadcastExchangeExec` and `MAX number of
threads`. Please do your diligence for this doc. Also, we might have to
describe when to increase and when to decrease.
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