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HDFS-2002. Incorrect computation of needed blocks in getTurnOffTip(). Contributed by Plamen Jeliazkov.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1195869 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Konstantin Shvachko 2011-11-01 08:37:11 +00:00
parent a3a4ccfed7
commit 22000ce96d
3 changed files with 11 additions and 4 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -1833,6 +1833,9 @@ Release 0.22.0 - Unreleased
HDFS-2285. BackupNode should reject requests to modify namespace.
(shv and Uma Maheswara Rao)
HDFS-2002. Incorrect computation of needed blocks in getTurnOffTip().
(Plamen Jeliazkov via shv)
Release 0.21.1 - Unreleased
HDFS-1466. TestFcHdfsSymlink relies on /tmp/test not existing. (eli)

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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@ -2883,6 +2883,9 @@ class SafeModeInfo {
private SafeModeInfo(Configuration conf) {
this.threshold = conf.getFloat(DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_KEY,
DFS_NAMENODE_SAFEMODE_THRESHOLD_PCT_DEFAULT);
if(threshold > 1.0) {
LOG.warn("The threshold value should't be greater than 1, threshold: " + threshold);
}
this.datanodeThreshold = conf.getInt(
DFS_NAMENODE_SAFEMODE_MIN_DATANODES_KEY,
DFS_NAMENODE_SAFEMODE_MIN_DATANODES_DEFAULT);
@ -3170,7 +3173,7 @@ String getTurnOffTip() {
msg += String.format(
"The reported blocks %d needs additional %d"
+ " blocks to reach the threshold %.4f of total blocks %d.",
blockSafe, (blockThreshold - blockSafe), threshold, blockTotal);
blockSafe, (blockThreshold - blockSafe) + 1, threshold, blockTotal);
}
if (numLive < datanodeThreshold) {
if (!"".equals(msg)) {
@ -3179,7 +3182,7 @@ String getTurnOffTip() {
msg += String.format(
"The number of live datanodes %d needs an additional %d live "
+ "datanodes to reach the minimum number %d.",
numLive, datanodeThreshold - numLive, datanodeThreshold);
numLive, (datanodeThreshold - numLive) + 1 , datanodeThreshold);
}
msg += " " + leaveMsg;
} else {

5
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestSafeMode.java
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@ -58,8 +58,9 @@ public void testDatanodeThreshold() throws IOException {
String tipMsg = cluster.getNamesystem().getSafeModeTip();
assertTrue("Safemode tip message looks right",
tipMsg.contains("The number of live datanodes 0 needs an " +
"additional 1 live"));
tipMsg.contains("The number of live datanodes 0 needs an additional " +
"2 live datanodes to reach the minimum number 1. " +
"Safe mode will be turned off automatically."));
// Start a datanode
cluster.startDataNodes(conf, 1, true, null, null);