Allow SnapshotDeletionPolicy to be reused across writer close/open
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Key: LUCENE-1184
URL: https://issues.apache.org/jira/browse/LUCENE-1184
Project: Lucene - Java
Issue Type: Improvement
Components: Index
Affects Versions: 2.3
Reporter: Michael McCandless
Assignee: Michael McCandless
Priority: Minor
Fix For: 2.4
If you re-use the same instance of SnapshotDeletionPolicy across a
close/open of your writer, and you had a snapshot open, it can still
be removed when the 2nd writer is opened. This is because SDP is
comparing IndexCommitPoint instances.
The fix is to instead compare segments file names.
I've also changed the inner class IndexFileDeleter.CommitPoint to be
static so an instance of SnapshotDeletionPolicy does not hold
references to IndexFileDeleter, DocumentsWriter, etc.
Spinoff from here:
http://markmail.org/message/bojgqfgyxkkv4fyb
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