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https://issues.apache.org/jira/browse/HDFS-16077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17365410#comment-17365410
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Stephen O'Donnell commented on HDFS-16077:
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I didn't think that OIV had been modified to use the sub-sections. Are you
running a version where OIV has been modified to attempt to process the image
in parallel?
Can you post the full stack trace you encountered to the Jira for reference?
> OIV parsing tool throws NPE for a FSImage with multiple InodeSections
> ---------------------------------------------------------------------
>
> Key: HDFS-16077
> URL: https://issues.apache.org/jira/browse/HDFS-16077
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Ravuri Sushma sree
> Priority: Major
>
> An FSImage with Multiple InodeSections is resulting in NPE when accessed
> through OIV Tool with default Parser (WEB)
> This issue is reproducible only with multiple InodeSections (Writing more
> than 1 Million Files)
> On analyzing the code further we found that NPE is caused in
> org.apache.hadoop.hdfs.tools.offlineImageViewer.FSImageLoader.fromINodeId(long).
> fromINodeId(long) is searching for Inode in an Inodesection which doesn't
> have the Inode(but exists in another InodeSection)
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