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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2015/02/13 21:24:11 UTC

[jira] [Created] (ACCUMULO-3596) accumulo hangs in {{InetAddress#getByName}}

Eric Newton created ACCUMULO-3596:
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             Summary: accumulo hangs in {{InetAddress#getByName}}
                 Key: ACCUMULO-3596
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3596
             Project: Accumulo
          Issue Type: Bug
          Components: master, tserver
         Environment: large cluster
            Reporter: Eric Newton


calls to importDirectory were hanging.  After some debugging, it was determined that the imports were stuck waiting on DNS lookups.

{{InetAddress#getByName}} calls {{gethostbyname_r}}

Further, it was determined that the call only hangs if /etc/hosts.conf contains "reorder on".

A bug was found in this section of the glibc resolver, and a bug report will be made to them.

Workaround: turn off address reordering.

Many thanks to [~bfloss] for finding this bug.



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