Todd Lipcon has posted comments on this change. ( http://gerrit.cloudera.org:8080/12832 )
Change subject: Add extra TRACE calls for cancellation code path ...................................................................... Patch Set 1: > Patch Set 1: > > Thanks for working on this. Taking a look. For my own reference, it looks > like this trace gets dumped here: > https://github.com/apache/impala/blob/master/be/src/kudu/rpc/rpcz_store.cc#L243 Yep. It also gets sampled in /rpcz on Kudu into a set of buckets. i'm not sure if the Impala /rpcz includes the sampled traces or not. My guess is that the underlying issue is that something is holding onto one of the various locks for too long, and hopefully this will at least identify which lock is held, even if it doesn't identify the holder. -- To view, visit http://gerrit.cloudera.org:8080/12832 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Ifedd95098a011d7a3bb3ebb54bfb3cbb7e94fab4 Gerrit-Change-Number: 12832 Gerrit-PatchSet: 1 Gerrit-Owner: Todd Lipcon <t...@apache.org> 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: Todd Lipcon <t...@apache.org> Gerrit-Comment-Date: Fri, 22 Mar 2019 00:20:25 +0000 Gerrit-HasComments: No
