[jira] [Resolved] (LUCENE-5786) Unflushed/ truncated events file (hung testing subprocess)

["Dawid Weiss (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-5786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dawid Weiss resolved LUCENE-5786.
---------------------------------

    Resolution: Fixed

I upgraded to RR 2.1.6; it should halt the forked JVM on any communication with the master now so no more hangs, hopefully.

> Unflushed/ truncated events file (hung testing subprocess)
> ----------------------------------------------------------
>
>                 Key: LUCENE-5786
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5786
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: general/test
>            Reporter: Dawid Weiss
>            Assignee: Dawid Weiss
>             Fix For: 5.0, 4.10
>
>
> This has happened several times on Jenkins, typically on SSLMigrationTest.testDistribSearch, but probably on other tests as well.
> The symptom is: the test framework never terminates, it also reports an incorrect (?) hung test.
> The problem is that the actual forked JVM is hung on reading stdin, waiting for the next test suite (no test thread is present); the master process is hung on receiving data from the forked jvm (both the events file and stdout spill is truncated in the middle of a test). The last output is:
> {code}
> [
>   "APPEND_STDERR",
>   {
>     "chunk": "612639 T30203 oasu.DefaultSolrCoreState.doRecovery Running recovery - first canceling any ongoing recovery%0A"
>   }
> ]
> [
>   "APPEND_STDERR"
> {code}
> Overall, it looks insane -- there are flushes after each test completes (normally or not), there are tests *following* the one that last reported output and before dynamic suites on stdin. 
> I have no idea. The best explanation is insane -- looks like the test thread just died in the middle of executing Java code...



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