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https://issues.apache.org/jira/browse/HDFS-16244?focusedWorklogId=658067&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-658067
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ASF GitHub Bot logged work on HDFS-16244:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Sep/21 02:17
Start Date: 30/Sep/21 02:17
Worklog Time Spent: 10m
Work Description: jianghuazhu commented on pull request #3497:
URL: https://github.com/apache/hadoop/pull/3497#issuecomment-930694411
@jojochuang @virajjasani , here are some questions I hope to get your help.
I have resolved this issue (HDFS-16244), but I am not sure if more unit
tests are needed here. If necessary, I will continue to work hard. I hope you
can give some pointers.
thank you very much.
In addition, there are some exceptions in jenkins, such as:
TestMover
TestViewDistributedFileSystemWithMountLinks
It seems that these exceptions have little to do with the code I submitted.
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Issue Time Tracking
-------------------
Worklog Id: (was: 658067)
Time Spent: 50m (was: 40m)
> Add the necessary write lock in Checkpointer#doCheckpoint()
> -----------------------------------------------------------
>
> Key: HDFS-16244
> URL: https://issues.apache.org/jira/browse/HDFS-16244
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: JiangHua Zhu
> Assignee: JiangHua Zhu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> When BackupNode is enabled, Checkpointer#doCheckpoint() will start to work.
> When the image file needs to be reloaded, there is a call link, for example:
> FSImage#reloadFromImageFile()->FSNamesystem#clear()->FSDirectory#reset().
> In FSDirectory#reset(), the write lock needs to be acquired in advance, for
> example:
> void reset() {
> writeLock();
> try {
> ......
> } finally {
> writeUnlock();
> }
> }
> However, no write lock has been acquired before this.
> You will get an exception message at this time, for example:
> java.lang.AssertionError: Should hold namesystem write lock
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