Michael Ho has posted comments on this change. ( http://gerrit.cloudera.org:8080/12097 )
Change subject: IMPALA-7980: Fix spinning because of buggy num_unqueued_files_. ...................................................................... Patch Set 5: (3 comments) http://gerrit.cloudera.org:8080/#/c/12097/5/be/src/exec/hdfs-scan-node-base.h File be/src/exec/hdfs-scan-node-base.h: http://gerrit.cloudera.org:8080/#/c/12097/5/be/src/exec/hdfs-scan-node-base.h@465 PS5, Line 465: remaining_scan_range_issuances_ This feels a bit of a misnomer as parquet scanner will actually issue more scan ranges although it does so without calling AddDiskIoRanges(). http://gerrit.cloudera.org:8080/#/c/12097/5/be/src/exec/hdfs-scan-node.cc File be/src/exec/hdfs-scan-node.cc: http://gerrit.cloudera.org:8080/#/c/12097/5/be/src/exec/hdfs-scan-node.cc@79 PS5, Line 79: auto remaining = remaining_scan_range_issuances_.Load(); : if (remaining != 0) { : LOG(INFO) << "XXX Assertion Failed " << remaining << " " << GetStackTrace(); : } DCHECK_EQ(remaining_scan_range_issuances_.Load(), 0) << GetStackTrace(); http://gerrit.cloudera.org:8080/#/c/12097/5/be/src/exec/hdfs-scan-node.cc@212 PS5, Line 212: thread_state_.Close(this); I wonder if you can DCHECK remaining_scan_range_issuances_ to 0 after thread_state_.Close() as it seems to wait for all scaner threads to exit. However, I can imagine that we can potentially reach this point due to cancellation or reaching the limit so not all header ranges for the sequence files may have been handled yet ? -- To view, visit http://gerrit.cloudera.org:8080/12097 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I133de13238d3d05c510e2ff771d48979125735b1 Gerrit-Change-Number: 12097 Gerrit-PatchSet: 5 Gerrit-Owner: Philip Zeyliger <phi...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com> Gerrit-Reviewer: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Philip Zeyliger <phi...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-Reviewer: Todd Lipcon <t...@apache.org> Gerrit-Comment-Date: Sat, 26 Jan 2019 03:50:45 +0000 Gerrit-HasComments: Yes
