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Brandon Li commented on HDFS-4502:
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The uploaded patch should fix this problem. Basically it checks if fileId is available, use
INodeId.GRANDFATHER_INODE_ID for backward compatibility if fileId does exist.
> WebHdfsFileSystem handling of ifile field breaks compatibility and breaks HttpFS
> --------------------------------------------------------------------------------
>
> Key: HDFS-4502
> URL: https://issues.apache.org/jira/browse/HDFS-4502
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.0.0
> Reporter: Alejandro Abdelnur
> Assignee: Brandon Li
> Priority: Blocker
> Attachments: HDFS-4502.patch
>
>
> HDFS-4340 introduced a new field {{fileId}} in WebHDFS FileStatus JSON representation.
> There are a two issues with this:
> * This is changing the WebHDFS REST API, this has not been documented
> * WebHdfsFileSystem should not fail when that field is not present (This is the case
when using HttpFS against a FS implementation -other than HDFS- which does not handle fileId)
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