NPE while loading FSImage
--------------------------
Key: HADOOP-2934
URL: https://issues.apache.org/jira/browse/HADOOP-2934
Project: Hadoop Core
Issue Type: Bug
Components: dfs
Affects Versions: 0.17.0
Reporter: Raghu Angadi
André Martin reported on core-user mailing list :
{noformat}
[...]
2008-03-02 01:25:29,887 ERROR org.apache.hadoop.dfs.NameNode:
java.lang.NullPointerException
at
org.apache.hadoop.dfs.FSImage.readINodeUnderConstruction(FSImage.java:950)
at
org.apache.hadoop.dfs.FSImage.loadFilesUnderConstruction(FSImage.java:919)
at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:749)
at org.apache.hadoop.dfs.FSImage.loadFSImage(FSImage.java:634)
at org.apache.hadoop.dfs.FSImage.recoverTransitionRead(FSImage.java:223)
at org.apache.hadoop.dfs.FSDirectory.loadFSImage(FSDirectory.java:79)
at org.apache.hadoop.dfs.FSNamesystem.initialize(FSNamesystem.java:261)
at org.apache.hadoop.dfs.FSNamesystem.<init>(FSNamesystem.java:242)
at org.apache.hadoop.dfs.NameNode.initialize(NameNode.java:131)
at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:176)
at org.apache.hadoop.dfs.NameNode.<init>(NameNode.java:162)
at org.apache.hadoop.dfs.NameNode.createNameNode(NameNode.java:851)
at org.apache.hadoop.dfs.NameNode.main(NameNode.java:860)
{noformat}
Block object should be allocated before calling {{readFields()}} in
FSImage.java : {code}
BlockInfo[] blocks = new BlockInfo[numBlocks];
for (int i = 0; i < numBlocks; i++) {
blocks[i].readFields(in);
}
{code}
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