IOExeception can cause loss of data due to premature segment deletion
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Key: LUCENE-846
URL: https://issues.apache.org/jira/browse/LUCENE-846
Project: Lucene - Java
Issue Type: Bug
Components: Index
Reporter: Steven Parkes
If you hit an IOException, e.g., disk full, while making a cfs from its
constituent parts, you may not be able to rollback to the before-merge process.
This happens via addIndexes.
I don't have a nice easy test for this; generating IOEs ain't so easy. But it
does happen in the patch for the factored merge policy with the existing tests
because the pseudo-randomly generated IOEs fall in a different place.
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