[HBASE-8968] Avoid call to zk in HRegionServer#getMaster() to log the master address which already read from the zk.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.94.9
• Fix Version/s: 0.94.10
• Component/s: Zookeeper
• Assignee: rajeshbabu
• Reporter: rajeshbabu
• Created: 17/Jul/13 15:19
• Updated: 24/Jul/13 19:08
• Resolved: 18/Jul/13 00:35

Description

To log the master address we are making an extra call to zookeeper which we already read and trying to connect to the address.

      masterServerName = this.masterAddressManager.getMasterAddress();
      if (masterServerName == null) {
        if (!keepLooping()) {
          // give up with no connection.
          LOG.debug("No master found and cluster is stopped; bailing out");
          return null;
        }
        LOG.debug("No master found; retry");
        previousLogTime = System.currentTimeMillis();

        sleeper.sleep();
        continue;
      }

      masterIsa =
        new InetSocketAddress(masterServerName.getHostname(), masterServerName.getPort());

      LOG.info("Attempting connect to Master server at " +
        this.masterAddressManager.getMasterAddress());