@Override
protected void playOp(RedoableOp op) throws Exception {
checkError();
int mboxId = op.getMailboxId();
if (mboxId == RedoableOp.MAILBOX_ID_ALL || mboxId == RedoableOp.UNKNOWN_ID) {
// Multi-mailbox ops are executed by the main thread to prevent later ops
// that depend on this op's result aren't run out of order.
if (ZimbraLog.redolog.isDebugEnabled()) ZimbraLog.redolog.info("Executing: " + op.toString());
op.redo();
} else {
// Ops for the same mailbox must be played back in order. To ensure that,
// all ops for the same mailbox are sent to the same player thread. The
// ops are added to the thread's internal queue and played back in order.
// This assignment of ops to threads will result in uneven distribution.
int index = Math.abs(mboxId % mPlayerThreads.length);
PlayerThread player = mPlayerThreads[index];
RedoTask task = new RedoTask(op);
if (ZimbraLog.redolog.isDebugEnabled()) ZimbraLog.redolog.info("Enqueuing: " + op.toString());
try {
player.enqueue(task);
} catch (InterruptedException e) {
}
}
}
