[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17389296#comment-17389296
]
Akira Ajisaka commented on HDFS-14529:
--
We recently hit the edit log corruption in a Hadoop 2.x cluster. In the edit
log, there is a SetTimeOp to set atime to a non-existent file. We had set the
atime to -1 to avoid NPE in the corrupt edit log via offline edits viewer.
After applying the PR, we will work around the NPE by just supplying -recover
option. Thanks.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Wei-Chiu Chuang
>Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17388406#comment-17388406
]
Wei-Chiu Chuang commented on HDFS-14529:
i posted a PR #3243 let me know how you think.
The PR does not resolve the issue. It merely makes the exception more graceful
(FileNotFoundException instead of NPE). When the bad edit log is written and
loaded, it's already too late. NameNode can work around the exception by
supplying the startup option -recover.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17373709#comment-17373709
]
Wei-Chiu Chuang commented on HDFS-14529:
Another possibility to hit this error (without snapshots) is the race between
rename and setTime.
The getBlockLocation had a data race where path could be resolved to IIP,
release the lock, rename the file, and then the IIP couldn't reach the file.
HDFS-13901 fixed that.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17373706#comment-17373706
]
Wei-Chiu Chuang commented on HDFS-14529:
We encountered this bug again, and it is reproducible for this set of
fsimage/edit logs.
We added debug logs and found that the IIP has a few missing components. It was
supposed to have 8 components in the path but only 6 was found. Two were nulls.
It is likely caused by files already deleted from snapshots. Somehow the active
NN keeps the file in memory, so standby namenode crashes upon loading edits.
Comparing this method with other similar methods, I think we should check for
nullity of iip.getLastINode(), and throw FileNotFoundException. There are other
places in the code where we could add the nullity check as well. I did fail
several times for other edit log op (mkdir, rename, renameSnapshot) too.
{noformat}
21/07/02 11:39:39 ERROR namenode.FSEditLogLoader: AssertionError caught in
unprotectedSetTimes: iip=INodesInPath: path =
/apps/hive/warehouse/ea_common.db/sls_blng_rw/ins_gmt_dt=2021-06-22/part-1-087de2ec-7888-4f2b-bea6-3702c69cf953.c000
inodes = [, apps, hive, warehouse, ea_common.db, sls_blng_rw, null, null],
length=8
isSnapshot= false
snapshotId= 8014, lastINode=null, mtime=-1, atime=1624825911021,
force? true
java.lang.AssertionError: i = 6 != 8, this=INodesInPath: path =
/apps/hive/warehouse/ea_common.db/sls_blng_rw/ins_gmt_dt=2021-06-22/part-1-087de2ec-7888-4f2b-bea6-3702c69cf953.c000
inodes = [, apps, hive, warehouse, ea_common.db, sls_blng_rw, null, null],
length=8
isSnapshot= false
snapshotId= 8014
at
org.apache.hadoop.hdfs.server.namenode.INodesInPath.validate(INodesInPath.java:488)
at
org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:355)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:631)
{noformat}
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16970116#comment-16970116
]
Xiaoqiao He commented on HDFS-14529:
Thanks [~sodonnell] for your quick response. I have noticed HDFS-12369.
However, in my case, we do not use SNAPSHOT feature, and I also check file
mentioned above log and its all parent path, all of them are not snapshot path.
I have to state that the case I mentioned is appear with old version. I would
like to share some more information if any progress.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16970102#comment-16970102
]
Stephen O'Donnell commented on HDFS-14529:
--
[~hexiaoqiao] The stack trace you posted looks like HDFS-12369. See this
comment especially, as we believe HDFS-12369 can show some different stack
traces when it occurs:
https://issues.apache.org/jira/browse/HDFS-12369?focusedCommentId=16304855=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16304855
[~szetszwo] I encountered the stack you mentioned once in a cluster that has
snapshots, and the snapshots were somewhat corrupt. The cluster had frequently
hit HDFS-13101. In that example, we found the file it was attempting to apply
the TimesOp against did not exist except in the snapshot, and if I recall
correctly, within the snapshot it was not really readable due to something
similar to HDFS-13101. The interesting thing, was that even though the file was
deleted, more edits kept appearing with the invalid TimesOp in it. That cluster
had other issues we fixed and this problem got cleared as a side-effect. In
short, it is likely this is somehow related to snapshots.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16970092#comment-16970092
]
Xiaoqiao He commented on HDFS-14529:
I also meet another NPE at StandbyNN (build with hadoop-2.7.1) to replay
editlog, it seems some corner case to trigger FSEditLogLoader throw null
pointer.
{code:java}
2019-11-06 18:30:25,948 ERROR
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader: Encountered exception
on operation CloseOp [length=0, inodeId=0, path=$path, replication=3,
mtime=1573034707723, atime=1571949218729, blockSize=67108864,
blocks=[blk_2870262427_1841120265], permissions=*:*:rw-r--r--, aclEntries=null,
clientName=, clientMachine=, overwrite=false, storagePolicyId=0,
opCode=OP_CLOSE, txid=21246238494]
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguousUnderConstruction.setGenerationStampAndVerifyReplicas(BlockInfoContiguousUnderConstruction.java:259)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoContiguousUnderConstruction.commitBlock(BlockInfoContiguousUnderConstruction.java:279)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.forceCompleteBlock(BlockManager.java:1199)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.updateBlocks(FSEditLogLoader.java:1022)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:438)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:234)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:143)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:844)
at
org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:825)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:232)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:331)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:284)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:301)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1666)
at
org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:426)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:297)
{code}
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16969659#comment-16969659
]
Tsz-wo Sze commented on HDFS-14529:
---
Not sure if HDFS-14807 could fix the NPE.
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16967079#comment-16967079
]
Tsz-wo Sze commented on HDFS-14529:
---
Is there a way to reproduce the NPE? Or, could you describe how it got to this
situation?
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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[jira] [Commented] (HDFS-14529) NPE while Loading the Editlogs
[
https://issues.apache.org/jira/browse/HDFS-14529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16967072#comment-16967072
]
Tsz-wo Sze commented on HDFS-14529:
---
[~Harsha1206], I am wonder if this is snapshot related. Were you using
snapshots?
> NPE while Loading the Editlogs
> --
>
> Key: HDFS-14529
> URL: https://issues.apache.org/jira/browse/HDFS-14529
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
>Affects Versions: 3.1.1
>Reporter: Harshakiran Reddy
>Assignee: Ayush Saxena
>Priority: Major
>
> {noformat}
> 2019-05-31 15:15:42,397 ERROR namenode.FSEditLogLoader: Encountered exception
> on operation TimesOp [length=0,
> path=/testLoadSpace/dir0/dir0/dir0/dir2/_file_9096763, mtime=-1,
> atime=1559294343288, opCode=OP_TIMES, txid=18927893]
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.unprotectedSetTimes(FSDirAttrOp.java:490)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.applyEditLogOp(FSEditLogLoader.java:711)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:286)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:181)
> at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:924)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSImage(FSImage.java:771)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:331)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1105)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:726)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.doRecovery(NameNode.java:1558)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1640)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1725){noformat}
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