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HDFS-3194. DataNode block scanner is running too frequently. Contributed by Andy Isaacson 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1373928 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Eli Collins 2012-08-16 17:13:13 +00:00
parent 2926ae6ead
commit 4524655afd
2 changed files with 4 additions and 4 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -616,6 +616,9 @@ Branch-2 ( Unreleased changes )
HDFS-3048. Small race in BlockManager#close. (Andy Isaacson via eli)
HDFS-3194. DataNode block scanner is running too frequently.
(Andy Isaacson via eli)
BREAKDOWN OF HDFS-3042 SUBTASKS
HDFS-2185. HDFS portion of ZK-based FailoverController (todd)

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceScanner.java
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@ -554,11 +554,9 @@ class BlockPoolSliceScanner {
}
private synchronized void startNewPeriod() {
if (LOG.isDebugEnabled()) {
LOG.debug("Starting a new period : work left in prev period : "
LOG.info("Starting a new period : work left in prev period : "
+ String.format("%.2f%%", totalBytesToScan == 0 ? 0
: (bytesLeft * 100.0) / totalBytesToScan));
}
// reset the byte counts :
bytesLeft = totalBytesToScan;
@ -566,7 +564,6 @@ class BlockPoolSliceScanner {
}
void scanBlockPoolSlice() {
startNewPeriod();
// Create a new processedBlocks structure
processedBlocks = new HashMap<Long, Integer>();
if (!assignInitialVerificationTimes()) {