tree f8b6b933ac93ecee32a85ad882fecf3779146232
parent 194a69de95dfe1b88a1735e94029add368f9c00a
author Dave Borowitz <dborowitz@google.com> 1392321363 -0800
committer Dave Borowitz <dborowitz@google.com> 1392665361 -0500

Support committing Lucene writes within a fixed interval

The ramBufferSize and maxBufferedDocs options control how often the
writer is flushed, but this does not fsync files on disk and thus
might not be permanent, particularly in a machine under heavy load.

Add an option commitWithin to bound the time between calls to commit.
Give each sub-index its own executor to flush and commit outstanding
changes. Non-positive periods trigger commit on every write.

Change-Id: Idfaf17a1eeb9240f25ee1fc842bdf4f8c9b873c3