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HBASE-1023 Check global flusher 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@720325 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2008-11-24 22:58:36 +00:00
parent 9e98d664ed
commit 2c56399b01
2 changed files with 9 additions and 2 deletions
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1
CHANGES.txt
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@ -82,6 +82,7 @@ Release 0.19.0 - Unreleased
HBASE-1009 Master stuck in loop wanting to assign but regions are closing
HBASE-1016 Fix example in javadoc overvie
HBASE-1021 hbase metrics FileContext not working
HBASE-1023 Check global flusher
IMPROVEMENTS
HBASE-901 Add a limit to key length, check key and value length on client side

10
src/java/org/apache/hadoop/hbase/regionserver/MemcacheFlusher.java
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@ -220,17 +220,23 @@ class MemcacheFlusher extends Thread implements FlushRequester {
*/
private synchronized void flushSomeRegions() {
// keep flushing until we hit the low water mark
long globalMemcacheSize = -1;
for (SortedMap<Long, HRegion> m =
this.server.getCopyOfOnlineRegionsSortedBySize();
server.getGlobalMemcacheSize() >= globalMemcacheLimitLowMark;) {
(globalMemcacheSize = server.getGlobalMemcacheSize()) >=
this.globalMemcacheLimitLowMark;) {
// flush the region with the biggest memcache
if (m.size() <= 0) {
LOG.info("No online regions to flush though we've been asked flush " +
"some; globalMemcacheSize=" + this.server.getGlobalMemcacheSize() +
"some; globalMemcacheSize=" + globalMemcacheSize +
", globalMemcacheLimitLowMark=" + this.globalMemcacheLimitLowMark);
break;
}
HRegion biggestMemcacheRegion = m.remove(m.firstKey());
LOG.info("Forced flushing of " + biggestMemcacheRegion.toString() +
" because global memcache limit of " + this.globalMemcacheLimit +
" exceeded; currenly " + globalMemcacheSize + " and flushing till " +
this.globalMemcacheLimitLowMark);
if (!flushRegion(biggestMemcacheRegion, true)) {
// Something bad happened - give up.
break;