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https://issues.apache.org/jira/browse/HDFS-15293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17104510#comment-17104510
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Kihwal Lee commented on HDFS-15293:
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{quote}Because the checks only skip an image if BOTH conditions are met: 1.
time delta too small AND 2. txnid delta too small. It's an AND not OR.
{quote}
You are right. It works as is since the condition for the rejection will not be
met if a checkpointing was created due to the configured txns limit.
+1
> Relax the condition for accepting a fsimage when receiving a checkpoint
> ------------------------------------------------------------------------
>
> Key: HDFS-15293
> URL: https://issues.apache.org/jira/browse/HDFS-15293
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Chen Liang
> Assignee: Chen Liang
> Priority: Major
> Labels: multi-sbnn, release-blocker
> Attachments: HDFS-15293.001.patch
>
>
> HDFS-12979 introduced the logic that, if ANN sees consecutive fs image upload
> from Standby with a small delta comparing to previous fsImage. ANN would
> reject this image. This is to avoid overly frequent fsImage in case of when
> there are multiple Standby node. However this check could be too stringent.
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