Henry Robinson has posted comments on this change.

Change subject: IMPALA-4885: Expose Jvm thread info in web UI
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Patch Set 1:

(5 comments)

this is pretty cool. Got a couple of suggestions about organisation and 
presentation, let me know what you think.

http://gerrit.cloudera.org:8080/#/c/6013/1/be/src/util/thread.cc
File be/src/util/thread.cc:

PS1, Line 209: RegisterUrlCallback
Rather than adding another top-level link, consider making two tabs on the 
threadz.tmpl page - maybe thread overview and JVM threads for now. See 
query_detail_tabs.tmpl for how to add tabs to a page in bootstrap.


PS1, Line 234: bool track_jvm_threads,
how about just making this a member of ThreadMgr? Actually - I don't think 
ThreadMgr needs to know about JVM threads at all, right? Why not just have 
something like:

  void ThreadOverviewUrlCallback(...) {
    thread_mgr->GetThreadOverview(document);
    GetJvmThreadOverview(document);
  }

and then you avoid having to pass track_jvm_threads to ThreadMgr at all, which 
is good because it doesn't really track or manage those threads.


Line 260:                 << status.GetDetail();
return, then remove else { }


PS1, Line 262: jvmThreadsVal
C++ naming styles


http://gerrit.cloudera.org:8080/#/c/6013/1/www/jvm-threadz.tmpl
File www/jvm-threadz.tmpl:

PS1, Line 35: Is n
Native


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Gerrit-MessageType: comment
Gerrit-Change-Id: Id497043ab33dcf107a562f0b1ccd5c46095d397f
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Dimitris Tsirogiannis <dtsirogian...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Dimitris Tsirogiannis <dtsirogian...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-HasComments: Yes

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