dengzhhu653 commented on code in PR #4520:
URL: https://github.com/apache/hive/pull/4520#discussion_r1285588235
##########
ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java:
##########
@@ -1039,7 +1039,7 @@ public static List<String> mergeUniqElems(List<String>
src, List<String> dest) {
return src;
}
- private static final String tmpPrefix = "_tmp.";
+ private static final String tmpPrefix = "-tmp.";
private static final String taskTmpPrefix = "_task_tmp.";
Review Comment:
Some ideas about the change:
- The "-tmp" output would be visible to user if HS2 fails to delete the
directory(non-partition external table)
- Duplicated records might happen if the merge task reads all output files
under "-tmp"
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