sometimes if a BG merge hits an exception, optimize() will fail to forward the
exception
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Key: LUCENE-1376
URL: https://issues.apache.org/jira/browse/LUCENE-1376
Project: Lucene - Java
Issue Type: Bug
Components: Index
Affects Versions: 2.3
Reporter: Michael McCandless
Assignee: Michael McCandless
Priority: Trivial
Fix For: 2.4
Attachments: LUCENE-1376.patch
I was seeing an intermittant failure, only on a Windows instance running inside
VMWare, of TestIndexWriter.testAddIndexOnDiskFull.
It is happening because the while loop that checks for merge exceptions that
had occurred during optimize fails to catch the case where all the BG optimize
merges completed (or hit exceptions) before the while loop begins. IE, all BG
threads finished before the FG thread advanced to the while loop. In that case
the code fails to check if there were any exceptions.
The fix is straightforward: change the while loop so that it always checks, at
least once, whether there were exceptions.
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