LakshSingla commented on code in PR #16002:
URL: https://github.com/apache/druid/pull/16002#discussion_r1507096374
##########
extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/indexing/error/BroadcastTablesTooLargeFault.java:
##########
@@ -68,12 +78,37 @@ public boolean equals(Object o)
return false;
}
BroadcastTablesTooLargeFault that = (BroadcastTablesTooLargeFault) o;
- return maxBroadcastTablesSize == that.maxBroadcastTablesSize;
+ return maxBroadcastTablesSize == that.maxBroadcastTablesSize
+ && configuredJoinAlgorithm == that.configuredJoinAlgorithm;
}
@Override
public int hashCode()
{
- return Objects.hash(super.hashCode(), maxBroadcastTablesSize);
+ return Objects.hash(super.hashCode(), maxBroadcastTablesSize,
configuredJoinAlgorithm);
+ }
+
+ private static String makeMessage(final long maxBroadcastTablesSize, final
JoinAlgorithm configuredJoinAlgorithm)
+ {
+ if (configuredJoinAlgorithm == null || configuredJoinAlgorithm ==
JoinAlgorithm.BROADCAST) {
+ return StringUtils.format(
+ "Size of broadcast tables in JOIN exceeds reserved memory limit "
+ + "(memory reserved for broadcast tables = [%,d] bytes). "
+ + "Increase available memory, or set [%s: %s] in query context to
use a shuffle-based join.",
+ maxBroadcastTablesSize,
+ PlannerContext.CTX_SQL_JOIN_ALGORITHM,
+ JoinAlgorithm.SORT_MERGE.toString()
+ );
+ } else {
+ return StringUtils.format(
+ "Size of broadcast tables in JOIN exceeds reserved memory limit "
Review Comment:
We can ask the user to "Increase the available memory" to remedy the
situation.
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