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HADOOP-2430 Master will not shut down if there are no active region servers 

git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk/src/contrib/hbase@604309 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jim Kellerman 2007-12-14 21:51:45 +00:00
parent 10bac1971d
commit 9b68f4bf41
2 changed files with 23 additions and 11 deletions
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1
CHANGES.txt
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@ -81,6 +81,7 @@ Trunk (unreleased changes)
HADOOP-2418 Fix assertion failures in TestTableMapReduce, TestTableIndex,
and TestTableJoinMapReduce
HADOOP-2414 Fix ArrayIndexOutOfBoundsException in bloom filters.
HADOOP-2430 Master will not shut down if there are no active region servers
IMPROVEMENTS
HADOOP-2401 Add convenience put method that takes writable

33
src/java/org/apache/hadoop/hbase/HMaster.java
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@ -1029,6 +1029,10 @@ public class HMaster extends Thread implements HConstants, HMasterInterface,
*/
try {
for (RegionServerOperation op = null; !closed.get(); ) {
if (shutdownRequested && serversToServerInfo.size() == 0) {
startShutdown();
break;
}
if (rootRegionLocation.get() != null) {
// We can't process server shutdowns unless the root region is online
@ -1174,7 +1178,23 @@ public class HMaster extends Thread implements HConstants, HMasterInterface,
LOG.error("Failed startup", e);
}
}
/*
* Start shutting down the master
*/
private void startShutdown() {
closed.set(true);
stopScanners();
synchronized(toDoQueue) {
toDoQueue.clear(); // Empty the queue
delayedToDoQueue.clear(); // Empty shut down queue
toDoQueue.notifyAll(); // Wake main thread
}
synchronized (serversToServerInfo) {
serversToServerInfo.notifyAll();
}
}
/*
* Stop the root and meta scanners so that the region servers serving meta
* regions can shut down.
@ -1356,16 +1376,7 @@ public class HMaster extends Thread implements HConstants, HMasterInterface,
// If the only servers we know about are meta servers, then we can
// proceed with shutdown
LOG.info("All user tables quiesced. Proceeding with shutdown");
closed.set(true);
stopScanners();
synchronized(toDoQueue) {
toDoQueue.clear(); // Empty the queue
delayedToDoQueue.clear(); // Empty shut down queue
toDoQueue.notifyAll(); // Wake main thread
}
synchronized (serversToServerInfo) {
serversToServerInfo.notifyAll();
}
startShutdown();
}
if (shutdownRequested && !closed.get()) {