imay commented on a change in pull request #1788: add param:
doris_exchange_instances to set parallel after exchange
URL: https://github.com/apache/incubator-doris/pull/1788#discussion_r324001399
##########
File path: fe/src/main/java/org/apache/doris/qe/SessionVariable.java
##########
@@ -73,6 +73,8 @@
public static final int MAX_EXEC_INSTANCE_NUM = 32;
// if set to true, some of stmt will be forwarded to master FE to get
result
public static final String FORWARD_TO_MASTER = "forward_to_master";
+ // user can set instance num after exchange, no need to be equal to nums
of before exchange
+ public static final String EXCHANGE_INSTANCE_PARALLEL =
"exchange_instance_parallel";
Review comment:
```suggestion
public static final String PARALLEL_EXCHANGE_INSTANCE_NUM =
"parallel_exchange_instance_num";
```
keep consistent with "parallel_fragment_exec_instance_num"
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