[
https://issues.apache.org/jira/browse/HDFS-14674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
wangzhaohui updated HDFS-14674:
-------------------------------
Description:
Add the following configuration
!image-2019-08-22-16-24-06-518.png|width=451,height=80!
error:
{code:java}
//
[2019-07-17T11:50:21.048+08:00] [INFO] [Edit log tailer] : replaying edit log:
1/20512836 transactions completed. (0%) [2019-07-17T11:50:21.059+08:00] [INFO]
[Edit log tailer] : Edits file
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
of size 3126782311 edits # 500 loaded in 3 seconds
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
expecting start txid #232056752162 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit
log tailer] : Start loading edits file
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
maxTxnipsToRead = 500 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer]
: Fast-forwarding stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit
log tailer] ip: Fast-forwarding stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662 [2019-07-17T11:50:21.061+08:00] [ERROR] [Edit
log tailer] : Unknown error encountered while tailing edits. Shutting down
standby NN. java.io.IOException: There appears to be a gap in the edit log. We
expected txid 232056752162, but got txid 232077264498. at
org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:239)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:161)
at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:895)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:321)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:460)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$400(EditLogTailer.java:410)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:427)
at
org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:414)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:423)
[2019-07-17T11:50:21.064+08:00] [INFO] [Edit log tailer] : Exiting with status
1 [2019-07-17T11:50:21.066+08:00] [INFO] [Thread-1] : SHUTDOWN_MSG:
/************************************************************ SHUTDOWN_MSG:
Shutting down NameNode at ip
************************************************************/
{code}
if dfs.ha.tail-edits.max-txns-per-lock value is 500,when the namenode load the
editlog util 500,the current namenode will load the next editlog,but editlog
more than 500.So,namenode got an unexpected txid when tail editlog.
{code:java}
//
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Edits file
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
of size 3126782311 edits # 500 loaded in 3 seconds
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
expecting start txid #232056752162
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Start loading edits
file
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
maxTxnsToRead = 500
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662
[2019-07-17T11:50:21.061+08:00] [ERROR] [Edit log tailer] : Unknown error
encountered while tailing edits. Shutting down standby NN.
java.io.IOException: There appears to be a gap in the edit log. We expected
txid 232056752162, but got txid 232077264498.
{code}
Read data from JN twice in the same second,changed segmentTxId,finally quit
because of txid mismatch.
was:
Add the following configuration
!image-2019-07-26-11-34-23-405.png!
error:
{code:java}
//
[2019-07-17T11:50:21.048+08:00] [INFO] [Edit log tailer] : replaying edit log:
1/20512836 transactions completed. (0%) [2019-07-17T11:50:21.059+08:00] [INFO]
[Edit log tailer] : Edits file
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
of size 3126782311 edits # 500 loaded in 3 seconds
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
expecting start txid #232056752162 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit
log tailer] : Start loading edits file
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
maxTxnipsToRead = 500 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer]
: Fast-forwarding stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit
log tailer] ip: Fast-forwarding stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662 [2019-07-17T11:50:21.061+08:00] [ERROR] [Edit
log tailer] : Unknown error encountered while tailing edits. Shutting down
standby NN. java.io.IOException: There appears to be a gap in the edit log. We
expected txid 232056752162, but got txid 232077264498. at
org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:239)
at
org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:161)
at org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:895)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:321)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:460)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$400(EditLogTailer.java:410)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:427)
at
org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:414)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:423)
[2019-07-17T11:50:21.064+08:00] [INFO] [Edit log tailer] : Exiting with status
1 [2019-07-17T11:50:21.066+08:00] [INFO] [Thread-1] : SHUTDOWN_MSG:
/************************************************************ SHUTDOWN_MSG:
Shutting down NameNode at ip
************************************************************/
{code}
if dfs.ha.tail-edits.max-txns-per-lock value is 500,when the namenode load the
editlog util 500,the current namenode will load the next editlog,but editlog
more than 500.So,namenode got an unexpected txid when tail editlog.
{code:java}
//
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Edits file
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
of size 3126782311 edits # 500 loaded in 3 seconds
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
expecting start txid #232056752162
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Start loading edits
file
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
maxTxnsToRead = 500
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662
[2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
stream
'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
to transaction ID 232056751662
[2019-07-17T11:50:21.061+08:00] [ERROR] [Edit log tailer] : Unknown error
encountered while tailing edits. Shutting down standby NN.
java.io.IOException: There appears to be a gap in the edit log. We expected
txid 232056752162, but got txid 232077264498.
{code}
Read data from JN twice in the same second,changed segmentTxId,finally quit
because of txid mismatch.
> [SBN read] Got an unexpected txid when tail editlog
> ---------------------------------------------------
>
> Key: HDFS-14674
> URL: https://issues.apache.org/jira/browse/HDFS-14674
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: wangzhaohui
> Assignee: wangzhaohui
> Priority: Blocker
> Attachments: HDFS-14674-001.patch, HDFS-14674-003.patch,
> HDFS-14674-004.patch, HDFS-14674-005.patch, HDFS-14674-006.patch,
> HDFS-14674-007.patch, HDFS-14674-008.patch, HDFS-14674-009.patch,
> HDFS-14674-010.patch, HDFS-14674-011.patch,
> image-2019-08-22-16-24-06-518.png, image.png
>
>
> Add the following configuration
> !image-2019-08-22-16-24-06-518.png|width=451,height=80!
> error:
> {code:java}
> //
> [2019-07-17T11:50:21.048+08:00] [INFO] [Edit log tailer] : replaying edit
> log: 1/20512836 transactions completed. (0%) [2019-07-17T11:50:21.059+08:00]
> [INFO] [Edit log tailer] : Edits file
> http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
> of size 3126782311 edits # 500 loaded in 3 seconds
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
> org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
> expecting start txid #232056752162 [2019-07-17T11:50:21.059+08:00] [INFO]
> [Edit log tailer] : Start loading edits file
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
> maxTxnipsToRead = 500 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log
> tailer] : Fast-forwarding stream
> 'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?ipjid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
> to transaction ID 232056751662 [2019-07-17T11:50:21.059+08:00] [INFO] [Edit
> log tailer] ip: Fast-forwarding stream
> 'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
> to transaction ID 232056751662 [2019-07-17T11:50:21.061+08:00] [ERROR] [Edit
> log tailer] : Unknown error encountered while tailing edits. Shutting down
> standby NN. java.io.IOException: There appears to be a gap in the edit log.
> We expected txid 232056752162, but got txid 232077264498. at
> org.apache.hadoop.hdfs.server.namenode.MetaRecoveryContext.editLogLoaderPrompt(MetaRecoveryContext.java:94)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadEditRecords(FSEditLogLoader.java:239)
> at
> org.apache.hadoop.hdfs.server.namenode.FSEditLogLoader.loadFSEdits(FSEditLogLoader.java:161)
> at
> org.apache.hadoop.hdfs.server.namenode.FSImage.loadEdits(FSImage.java:895) at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:321)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:460)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$400(EditLogTailer.java:410)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:427)
> at
> org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:414)
> at
> org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:423)
> [2019-07-17T11:50:21.064+08:00] [INFO] [Edit log tailer] : Exiting with
> status 1 [2019-07-17T11:50:21.066+08:00] [INFO] [Thread-1] : SHUTDOWN_MSG:
> /************************************************************ SHUTDOWN_MSG:
> Shutting down NameNode at ip
> ************************************************************/
> {code}
>
> if dfs.ha.tail-edits.max-txns-per-lock value is 500,when the namenode load
> the editlog util 500,the current namenode will load the next editlog,but
> editlog more than 500.So,namenode got an unexpected txid when tail editlog.
>
>
> {code:java}
> //
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Edits file
> http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232056426162&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
> of size 3126782311 edits # 500 loaded in 3 seconds
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Reading
> org.apache.hadoop.hdfs.server.namenode.RedundantEditLogInputStream@51ceb7bc
> expecting start txid #232056752162
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Start loading
> edits file
> http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH
> maxTxnsToRead = 500
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
> stream
> 'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH,
>
> http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
> to transaction ID 232056751662
> [2019-07-17T11:50:21.059+08:00] [INFO] [Edit log tailer] : Fast-forwarding
> stream
> 'http://ip/getJournal?jid=ns1003&segmentTxId=232077264498&storageInfo=-63%3A1902204348%3A0%3ACID-hope-20180214-20161018-SQYH'
> to transaction ID 232056751662
> [2019-07-17T11:50:21.061+08:00] [ERROR] [Edit log tailer] : Unknown error
> encountered while tailing edits. Shutting down standby NN.
> java.io.IOException: There appears to be a gap in the edit log. We expected
> txid 232056752162, but got txid 232077264498.
> {code}
> Read data from JN twice in the same second,changed segmentTxId,finally quit
> because of txid mismatch.
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