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yiguolei pushed a commit to branch branch-2.1
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The following commit(s) were added to refs/heads/branch-2.1 by this push:
new 33e04b12ffe [conf](parallel) Reduce parallel tasks for large cluster
(#38196) (#38233)
33e04b12ffe is described below
commit 33e04b12ffec0e3287294c987f098068ec6f16b9
Author: Gabriel <gabrielleeb...@gmail.com>
AuthorDate: Tue Jul 23 13:42:31 2024 +0800
[conf](parallel) Reduce parallel tasks for large cluster (#38196) (#38233)
For large cluster, too many parallel tasks will cause performance issue.
So this PR limit the max parallel tasks in Doris.
pick #38196
<!--Describe your changes.-->
---
fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
index 047bd2f10fb..fba4324a621 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
@@ -801,7 +801,7 @@ public class SessionVariable implements Serializable,
Writable {
public String timeZone = TimeUtils.getSystemTimeZone().getID();
@VariableMgr.VarAttr(name = PARALLEL_EXCHANGE_INSTANCE_NUM)
- public int exchangeInstanceParallel = -1;
+ public int exchangeInstanceParallel = 100;
@VariableMgr.VarAttr(name = SQL_SAFE_UPDATES)
public int sqlSafeUpdates = 0;
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