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HDFS-7603. The background replication queue initialization may not let others run. Contributed by Kihwal Lee. 

(cherry picked from commit 89b07490f8)
This commit is contained in:
Kihwal Lee 2015-01-29 12:37:34 -06:00
parent 1081b4c4a7
commit 3b030731a0
2 changed files with 8 additions and 0 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -275,6 +275,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7675. Remove unused member DFSClient#spanReceiverHost (cmccabe) HDFS-7675. Remove unused member DFSClient#spanReceiverHost (cmccabe)
HDFS-7603. The background replication queue initialization may not let
others run (kihwal)
OPTIMIZATIONS OPTIMIZATIONS
HDFS-7454. Reduce memory footprint for AclEntries in NameNode. HDFS-7454. Reduce memory footprint for AclEntries in NameNode.

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -2615,6 +2615,9 @@ public class BlockManager {
long totalBlocks = blocksMap.size(); long totalBlocks = blocksMap.size();
replicationQueuesInitProgress = 0; replicationQueuesInitProgress = 0;
long totalProcessed = 0; long totalProcessed = 0;
long sleepDuration =
Math.max(1, Math.min(numBlocksPerIteration/1000, 10000));
while (namesystem.isRunning() && !Thread.currentThread().isInterrupted()) { while (namesystem.isRunning() && !Thread.currentThread().isInterrupted()) {
int processed = 0; int processed = 0;
namesystem.writeLockInterruptibly(); namesystem.writeLockInterruptibly();
@ -2671,6 +2674,8 @@ public class BlockManager {
} }
} finally { } finally {
namesystem.writeUnlock(); namesystem.writeUnlock();
// Make sure it is out of the write lock for sufficiently long time.
Thread.sleep(sleepDuration);
} }
} }
if (Thread.currentThread().isInterrupted()) { if (Thread.currentThread().isInterrupted()) {