@Override
public <T> T snapshot(SnapshotHandler<T> snapshotHandler) throws EngineException {
SnapshotIndexCommit snapshotIndexCommit = null;
Translog.Snapshot traslogSnapshot = null;
rwl.readLock().lock();
try {
snapshotIndexCommit = deletionPolicy.snapshot();
traslogSnapshot = translog.snapshot();
} catch (Exception e) {
if (snapshotIndexCommit != null) snapshotIndexCommit.release();
throw new SnapshotFailedEngineException(shardId, e);
} finally {
rwl.readLock().unlock();
}
try {
return snapshotHandler.snapshot(snapshotIndexCommit, traslogSnapshot);
} finally {
snapshotIndexCommit.release();
traslogSnapshot.release();
}
}
