Renukaprasad C created HDFS-15792:
-------------------------------------
Summary: ClasscastException while loading FSImage
Key: HDFS-15792
URL: https://issues.apache.org/jira/browse/HDFS-15792
Project: Hadoop HDFS
Issue Type: Bug
Components: nn
Reporter: Renukaprasad C
Assignee: Renukaprasad C
Attachments: image-2021-01-27-12-00-34-846.png
FSImage loading has failed with ClasscastException -
java.lang.ClassCastException: java.util.HashMap$Node cannot be cast to
java.util.HashMap$TreeNode.
This is the usage issue with Hashmap in concurrent scenarios.
Same issue has been reported on Java & closed as usage issue. -
https://bugs.openjdk.java.net/browse/JDK-8173671
2020-12-28 11:36:26,127 | ERROR | main | An exception occurred when loading
INODE from fsiamge. | FSImageFormatProtobuf.java:442
java.lang.
: java.util.HashMap$Node cannot be cast to java.util.HashMap$TreeNode
at java.util.HashMap$TreeNode.moveRootToFront(HashMap.java:1835)
at java.util.HashMap$TreeNode.treeify(HashMap.java:1951)
at java.util.HashMap.treeifyBin(HashMap.java:772)
at java.util.HashMap.putVal(HashMap.java:644)
at java.util.HashMap.put(HashMap.java:612)
at
org.apache.hadoop.hdfs.util.ReferenceCountMap.put(ReferenceCountMap.java:53)
at
org.apache.hadoop.hdfs.server.namenode.AclStorage.addAclFeature(AclStorage.java:391)
at
org.apache.hadoop.hdfs.server.namenode.INodeWithAdditionalFields.addAclFeature(INodeWithAdditionalFields.java:349)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINodeDirectory(FSImageFormatPBINode.java:225)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINode(FSImageFormatPBINode.java:406)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.readPBINodes(FSImageFormatPBINode.java:367)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINodeSection(FSImageFormatPBINode.java:342)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf$Loader$2.call(FSImageFormatProtobuf.java:469)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2020-12-28 11:36:26,130 | ERROR | main | Failed to load image from
FSImageFile(file=/srv/BigData/namenode/current/fsimage_0000000000198227480,
cpktTxId=0000000000198227480) | FSImage.java:738
java.io.IOException: java.lang.ClassCastException: java.util.HashMap$Node
cannot be cast to java.util.HashMap$TreeNode
at
org.apache.hadoop.io.MultipleIOException$Builder.add(MultipleIOException.java:68)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf$Loader.runLoaderTasks(FSImageFormatProtobuf.java:444)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf$Loader.loadInternal(FSImageFormatProtobuf.java:360)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf$Loader.load(FSImageFormatProtobuf.java:263)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormat$LoaderDelegator.load(FSImageFormat.java:227)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:971)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:955)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImageFile(FSImage.java:820)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:733)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1113)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:730)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:648)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:710)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:953)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:926)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1665)
at
org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1735)
Caused by: java.lang.ClassCastException: java.util.HashMap$Node cannot be cast
to java.util.HashMap$TreeNode
at java.util.HashMap$TreeNode.moveRootToFront(HashMap.java:1835)
at java.util.HashMap$TreeNode.treeify(HashMap.java:1951)
at java.util.HashMap.treeifyBin(HashMap.java:772)
at java.util.HashMap.putVal(HashMap.java:644)
at java.util.HashMap.put(HashMap.java:612)
at
org.apache.hadoop.hdfs.util.ReferenceCountMap.put(ReferenceCountMap.java:53)
at
org.apache.hadoop.hdfs.server.namenode.AclStorage.addAclFeature(AclStorage.java:391)
at
org.apache.hadoop.hdfs.server.namenode.INodeWithAdditionalFields.addAclFeature(INodeWithAdditionalFields.java:349)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINodeDirectory(FSImageFormatPBINode.java:225)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINode(FSImageFormatPBINode.java:406)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.readPBINodes(FSImageFormatPBINode.java:367)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatPBINode$Loader.loadINodeSection(FSImageFormatPBINode.java:342)
at
org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf$Loader$2.call(FSImageFormatProtobuf.java:469)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
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