haibow commented on issue #5600:
URL:
https://github.com/apache/incubator-pinot/issues/5600#issuecomment-647259914
The last few lines of the log shows
```
2020/06/21 11:26:45.012 INFO [SegmentDictionaryCreator]
[jeepusermap__1__0__20200621T1125Z] Using fixed bytes value dictionary for
column: field4, size: 0
2020/06/21 11:26:45.012 INFO [SegmentDictionaryCreator]
[jeepusermap__1__0__20200621T1125Z] Created dictionary for STRING column:
field4 with cardinality: 1, max length in bytes: 0, range: to
2020/06/21 11:26:45.036 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__2__0__20200621T1125Z] Start building IndexCreator!
2020/06/21 11:26:45.102 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__0__0__20200621T1125Z] Start building IndexCreator!
2020/06/21 11:26:45.113 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__1__0__20200621T1125Z] Start building IndexCreator!
2020/06/21 11:26:45.433 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__2__0__20200621T1125Z] Finished records indexing in IndexCreator!
2020/06/21 11:26:45.470 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__0__0__20200621T1125Z] Finished records indexing in IndexCreator!
2020/06/21 11:26:45.473 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__1__0__20200621T1125Z] Finished records indexing in IndexCreator!
2020/06/21 11:26:48.632 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__2__0__20200621T1125Z] Finished segment seal!
2020/06/21 11:26:48.638 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__1__0__20200621T1125Z] Finished segment seal!
2020/06/21 11:26:48.674 INFO [SegmentIndexCreationDriverImpl]
[jeepusermap__0__0__20200621T1125Z] Finished segment seal!
2020/06/21 11:27:22.204 ERROR
[LLRealtimeSegmentDataManager_jeepusermap__0__0__20200621T1125Z]
[jeepusermap__0__0__20200621T1125Z] Could not build segment
java.io.IOException: Unable to delete directory
/var/pinot/server/data/index/jeepusermap_REALTIME/_tmp/tmp-jeepusermap__0__0__20200621T1125Z-1592738788709/tmp-1592738788896-2704508350342974686.
at
org.apache.commons.io.FileUtils.deleteDirectory(FileUtils.java:1541)
~[pinot-all-0.4.0-jar-with-dependencies.jar:0.4.0-8355d2e0e489a8d127f2e32793671fba505628a8]
at org.apache.commons.io.FileUtils.move
```
Looks like the segment sealed successfully but failed to delete the tmp
folder.
If you could paste more logs (esp after the exception) we might have more
clues. Might be some permission issues.
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