Brahma Reddy Battula created HDFS-8507:
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Summary: hdfs secondarynamenode -geteditsize will fail when SNN is
running as daemon
Key: HDFS-8507
URL: https://issues.apache.org/jira/browse/HDFS-8507
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Brahma Reddy Battula
Assignee: Brahma Reddy Battula
hdfs secondarynamenode -geteditsize , will try to startSNN and fail to get
editsize, I feel, it might not required...
we can direcly call following is enough right..? why we need start SNN as part
of this command..?
{code}
case GETEDITSIZE:
long uncheckpointed = countUncheckpointedTxns();
System.out.println("NameNode has " + uncheckpointed +
" uncheckpointed transactions");
{code}
*Trace*
{noformat}
15/06/01 20:25:31 ERROR common.Storage: It appears that another node
12290@host189 has already locked the storage directory:
/home/hdfs/OpenSource/hadoop-2.7.0/hadoop-hdfs/dfs/namesecondary
java.nio.channels.OverlappingFileLockException
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.tryLock(Storage.java:712)
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:678)
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:499)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.recoverCreate(SecondaryNameNode.java:962)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:243)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:192)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:671)
15/06/01 20:25:31 INFO common.Storage: Cannot lock storage
/home/hdfs/OpenSource/hadoop-2.7.0/hadoop-hdfs/dfs/namesecondary. The directory
is already locked
15/06/01 20:25:31 FATAL namenode.SecondaryNameNode: Failed to start secondary
namenode
java.io.IOException: Cannot lock storage
/home/hdfs/OpenSource/hadoop-2.7.0/hadoop-hdfs/dfs/namesecondary. The directory
is already locked
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.lock(Storage.java:683)
at
org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:499)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.recoverCreate(SecondaryNameNode.java:962)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.initialize(SecondaryNameNode.java:243)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.<init>(SecondaryNameNode.java:192)
at
org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.main(SecondaryNameNode.java:671)
{noformat}
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