deniskuzZ commented on code in PR #4899:
URL: https://github.com/apache/hive/pull/4899#discussion_r2293805627
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ql/src/java/org/apache/hadoop/hive/ql/exec/tez/TezProcessor.java:
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@@ -293,6 +293,13 @@ protected void initializeAndRunProcessor(Map<String,
LogicalInput> inputs,
rproc.run();
perfLogger.perfLogEnd(CLASS_NAME, PerfLogger.TEZ_RUN_PROCESSOR);
+
+ // Try to call canCommit to AM. If there is no other speculative attempt
execute canCommit, then continue.
+ // If there are other speculative attempt execute canCommit first, then
wait until the attempt is killed
+ // or the committed task fails.
+ while (!this.processorContext.canCommit()) {
Review Comment:
There is no time interval that could lead to starvation. Also would be nice
to use some callback instead of Thread.sleep()
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