morningman commented on a change in pull request #5468:
URL: https://github.com/apache/incubator-doris/pull/5468#discussion_r589123679
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File path: fe/fe-core/src/main/java/org/apache/doris/qe/SessionVariable.java
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@@ -133,6 +134,9 @@
@VariableMgr.VarAttr(name = ENABLE_SPILLING)
public boolean enableSpilling = false;
+ @VariableMgr.VarAttr(name = ENABLE_EXCHANGE_NODE_PARALLEL_MERGE)
+ public boolean enableExchangeNodeParallelMerge = true;
Review comment:
default should be false?
If these are multi sort runs, but each run has a few rows, maybe this will
increase the overhead.
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