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https://issues.apache.org/jira/browse/HDFS-16557?focusedWorklogId=780193&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-780193
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ASF GitHub Bot logged work on HDFS-16557:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 10/Jun/22 03:46
Start Date: 10/Jun/22 03:46
Worklog Time Spent: 10m
Work Description: ZanderXu commented on PR #4219:
URL: https://github.com/apache/hadoop/pull/4219#issuecomment-1151901548
> When we set dfs.ha.tail-edits.in-progress=true, the edits can be read by
getJournaledEdits (there is no gap actually) . But there is an GAP exception
thrown.
I think there is a gap here because bootstrap expects to get 1050196644
txid, but can't find it in the result. So throwing GAP Exception is ok.
Issue Time Tracking
-------------------
Worklog Id: (was: 780193)
Time Spent: 4h 10m (was: 4h)
> 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: 4h 10m
> 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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