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

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.10, 6.0
• Component/s: general/test
• Lucene Fields: New
• Assignee: Dawid Weiss
• Reporter: Dawid Weiss
• Created: 23/Jun/14 09:56
• Updated: 28/Aug/22 14:10
• Resolved: 01/Jul/14 12:01

Description

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:

[
  "APPEND_STDERR",
  {
    "chunk": "612639 T30203 oasu.DefaultSolrCoreState.doRecovery Running recovery - first canceling any ongoing recovery%0A"
  }
]

[
  "APPEND_STDERR"

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...

Issue Links

• is related to: SOLR-6204 FreeBSD does not break out of ServerSocketChannel.accept()