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https://issues.apache.org/jira/browse/HDFS-12201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16102171#comment-16102171
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Daryn Sharp commented on HDFS-12201:
------------------------------------
INodes instances should know absolutely nothing about an external attributes
provider. The provider is mainly a hook to work in conjunction with
alternative permission checker.
What is the actual problem this jira is attempting to solve?
> INode#getSnapshotINode() should get INodeAttributes from
> INodeAttributesProvider for the current INode
> ------------------------------------------------------------------------------------------------------
>
> Key: HDFS-12201
> URL: https://issues.apache.org/jira/browse/HDFS-12201
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: snapshots
> Affects Versions: 2.8.0
> Reporter: Manoj Govindassamy
> Assignee: Manoj Govindassamy
>
> {{INodeFile}}
> {noformat}
> @Override
> public INodeFileAttributes getSnapshotINode(final int snapshotId) {
> FileWithSnapshotFeature sf = this.getFileWithSnapshotFeature();
> if (sf != null) {
> return sf.getDiffs().getSnapshotINode(snapshotId, this);
> } else {
> return this;
> }
> }
> {noformat}
> {{AbstractINodeDiffList#getSnapshotINode}}
> {noformat}
> public A getSnapshotINode(final int snapshotId, final A currentINode) {
> final D diff = getDiffById(snapshotId);
> final A inode = diff == null? null: diff.getSnapshotINode();
> return inode == null? currentINode: inode;
> }
> {noformat}
> INodeFile, INodeDirectory #getSnapshotINode() returns the current INode's
> local INodeAttributes if there is anything available for the given snapshot
> id. When there is an INodeAttributesProvider configured, attributes are
> retrieved from this external provider instead of the local. But,
> getSnapshotINode always returns the local attributes without retrieving them
> from attributes provider.
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