Examples of BabySitter

org.voltcore.zk.BabySitter
BabySitter watches a zookeeper node and alerts on appearances and disappearances of direct children. Note: if you are using this to watch a LeaderElector chain, be aware that the BabySitter notices race with notices of becoming the Leader. That is, a non-leader's babysitter can change before the non-leader knows it is the new leader. It is easier to use as the Leader -- in this case the leader can observe appearances and disappearances of its non-leader peers.

Examples of org.voltcore.zk.BabySitter

    void watchPartition(int pid, ExecutorService es, boolean shouldBlock)
        throws InterruptedException, ExecutionException
    {
        String dir = LeaderElector.electionDirForPartition(pid);
        m_callbacks.put(pid, new PartitionCallback(pid));
        BabySitter babySitter;


        if (shouldBlock) {
            babySitter = BabySitter.blockingFactory(m_zk, dir, m_callbacks.get(pid), es).getFirst();
        } else {
            babySitter = BabySitter.nonblockingFactory(m_zk, dir, m_callbacks.get(pid), es);

View Full Code Here

Examples of org.voltcore.zk.BabySitter

        tmLog.info("Removing and cleanup up partition info for partition " + pid);
        if (m_removedPartitionsAtPromotionTime != null) {
            m_removedPartitionsAtPromotionTime.add(pid);
            tmLog.info("Partition " + pid + " was cleaned up during LeaderAppointer promotion and should be skipped");
        }
        BabySitter sitter = m_partitionWatchers.remove(pid);
        if (sitter != null) {
            sitter.shutdown();
        }
        m_callbacks.remove(pid);
        try {
            ZKUtil.asyncDeleteRecursively(m_zk, ZKUtil.joinZKPath(VoltZK.iv2masters, String.valueOf(pid)));
            ZKUtil.asyncDeleteRecursively(m_zk, ZKUtil.joinZKPath(VoltZK.iv2appointees, String.valueOf(pid)));

View Full Code Here

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.