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https://issues.apache.org/jira/browse/HDFS-14148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Siyao Meng reassigned HDFS-14148:
---------------------------------
Assignee: Siyao Meng
> HDFS OIV ReverseXML snapshot issue: Found unknown XML keys in <dir>: dir
> ------------------------------------------------------------------------
>
> Key: HDFS-14148
> URL: https://issues.apache.org/jira/browse/HDFS-14148
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Affects Versions: 3.0.0
> Reporter: Siyao Meng
> Assignee: Siyao Meng
> Priority: Major
>
> The current HDFS OIV tool doesn't seem to support snapshot well when
> reversing XML back to binary.
> {code:bash}
> $ hdfs oiv -i fsimage_0000000000000026542.xml -o reverse.bin -p ReverseXML
> OfflineImageReconstructor failed: Found unknown XML keys in <dir>: dir
> java.io.IOException: Found unknown XML keys in <dir>: dir
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageReconstructor$Node.verifyNoRemainingKeys(OfflineImageReconstructor.java:324)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageReconstructor$SnapshotSectionProcessor.process(OfflineImageReconstructor.java:1357)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageReconstructor.processXml(OfflineImageReconstructor.java:1785)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageReconstructor.run(OfflineImageReconstructor.java:1840)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewerPB.run(OfflineImageViewerPB.java:193)
> at
> org.apache.hadoop.hdfs.tools.offlineImageViewer.OfflineImageViewerPB.main(OfflineImageViewerPB.java:136)
> $ grep -n "<dir>" fsimage_0000000000000026542.xml
> 228:<INodeReferenceSection></INodeReferenceSection><SnapshotSection><snapshotCounter>2</snapshotCounter><numSnapshots>2</numSnapshots><snapshottableDir><dir>20492</dir><dir>20495</dir></snapshottableDir>
> {code}
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