@Override
public void optimize(Optimize optimize) throws EngineException {
if (optimizeMutex.compareAndSet(false, true)) {
rwl.readLock().lock();
try {
if (indexWriter == null) {
throw new EngineClosedException(shardId);
}
int maxNumberOfSegments = optimize.maxNumSegments();
if (maxNumberOfSegments == -1) {
// not set, optimize down to half the configured number of segments
if (indexWriter.getMergePolicy() instanceof LogMergePolicy) {
maxNumberOfSegments =
((LogMergePolicy) indexWriter.getMergePolicy()).getMergeFactor() / 2;
if (maxNumberOfSegments < 0) {
maxNumberOfSegments = 1;
}
}
}
if (optimize.onlyExpungeDeletes()) {
indexWriter.expungeDeletes(optimize.waitForMerge());
} else {
indexWriter.optimize(maxNumberOfSegments, optimize.waitForMerge());
}
// once we did the optimization, we are "dirty" since we removed deletes potentially which
// affects TermEnum
dirty = true;
} catch (Exception e) {
throw new OptimizeFailedEngineException(shardId, e);
} finally {
rwl.readLock().unlock();
optimizeMutex.set(false);
}
}
if (optimize.flush()) {
flush(new Flush());
}
if (optimize.refresh()) {
refresh(new Refresh(false));
}
}
