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https://issues.apache.org/jira/browse/HDFS-12614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manoj Govindassamy updated HDFS-12614:
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Attachment: HDFS-12614.03.patch
Attached v03 patch with more comments. [~yzhangal], [~daryn], can you please
take a look at the latest patch revision? Thanks.
> FSPermissionChecker#getINodeAttrs() throws NPE when INodeAttributesProvider
> configured
> --------------------------------------------------------------------------------------
>
> Key: HDFS-12614
> URL: https://issues.apache.org/jira/browse/HDFS-12614
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.0.0-beta1
> Reporter: Manoj Govindassamy
> Assignee: Manoj Govindassamy
> Attachments: HDFS-12614.01.patch, HDFS-12614.02.patch,
> HDFS-12614.03.patch, HDFS-12614.test.01.patch
>
>
> When INodeAttributesProvider is configured, and when resolving path (like
> "/") and checking for permission, the following code when working on
> {{pathByNameArr}} throws NullPointerException.
> {noformat}
> private INodeAttributes getINodeAttrs(byte[][] pathByNameArr, int pathIdx,
> INode inode, int snapshotId) {
> INodeAttributes inodeAttrs = inode.getSnapshotINode(snapshotId);
> if (getAttributesProvider() != null) {
> String[] elements = new String[pathIdx + 1];
> for (int i = 0; i < elements.length; i++) {
> elements[i] = DFSUtil.bytes2String(pathByNameArr[i]); <===
> }
> inodeAttrs = getAttributesProvider().getAttributes(elements,
> inodeAttrs);
> }
> return inodeAttrs;
> }
> {noformat}
> Looks like for paths like "/" where the split components based on delimiter
> "/" can be null, the pathByNameArr array can have null elements and can throw
> NPE.
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