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https://issues.apache.org/jira/browse/HDFS-16557?focusedWorklogId=780186&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-780186
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ASF GitHub Bot logged work on HDFS-16557:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Jun/22 03:14
Start Date: 10/Jun/22 03:14
Worklog Time Spent: 10m
Work Description: tomscut commented on PR #4219:
URL: https://github.com/apache/hadoop/pull/4219#issuecomment-1151882369
> OK, back to BootstrapStandby GAP. Form this stack information, I got that
it try to get streams from 1049842441 to 1050196644. But cannot get the txid
1049842441 from the result streams. So I think we should to trace the root
cause, why can't we find txid 1049842441 in the return result of
`selectInputStreams(streams, 1049842441, true, true)`?
>
> Please correct me if anything is wrong.
Please refer to the discussion with @xkrogen above.
The root cause is the` if` condition (`if(next ==
HdfsServerConstants.INVALID_TXID)`) that does not enter properly.
Issue Time Tracking
-------------------
Worklog Id: (was: 780186)
Time Spent: 3.5h (was: 3h 20m)
> BootstrapStandby failed because of checking gap for inprogress
> EditLogInputStream
> ---------------------------------------------------------------------------------
>
> Key: HDFS-16557
> URL: https://issues.apache.org/jira/browse/HDFS-16557
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Tao Li
> Assignee: Tao Li
> Priority: Major
> Labels: pull-request-available
> Attachments: image-2022-04-22-17-17-14-577.png,
> image-2022-04-22-17-17-14-618.png, image-2022-04-22-17-17-23-113.png,
> image-2022-04-22-17-17-32-487.png
>
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> The lastTxId of an inprogress EditLogInputStream lastTxId isn't necessarily
> HdfsServerConstants.INVALID_TXID. We can determine its status directly by
> EditLogInputStream#isInProgress.
> We introduced [SBN READ], and set
> {color:#ff0000}{{dfs.ha.tail-edits.in-progress=true}}{color}. Then
> bootstrapStandby, the EditLogInputStream of inProgress is misjudged,
> resulting in a gap check failure, which causes bootstrapStandby to fail.
> hdfs namenode -bootstrapStandby
> !image-2022-04-22-17-17-32-487.png|width=766,height=161!
> !image-2022-04-22-17-17-14-577.png|width=598,height=187!
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