BsoBird commented on code in PR #5562:
URL: https://github.com/apache/hive/pull/5562#discussion_r1859755305
##########
ql/src/java/org/apache/hadoop/hive/ql/exec/mapjoin/MapJoinMemoryExhaustionHandler.java:
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@@ -96,7 +96,12 @@ public void checkMemoryStatus(long tableContainerSize, long
numRows)
+ tableContainerSize + "\tMemory usage:\t" + usedMemory +
"\tpercentage:\t" + percentageNumberFormat.format(percentage);
console.printInfo(msg);
if(percentage > maxMemoryUsage) {
- throw new MapJoinMemoryExhaustionError(msg);
+ System.gc();
Review Comment:
@zhangbutao @okumin
As a whole, this patch doesn't change any execution logic, it just rechecks
the memory space after trying to call system.gc() once in case of out-of-memory.
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