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https://issues.apache.org/jira/browse/HDFS-4131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-4131:
----------------------------
Description:
This jira provides internal data structures and computation processes for
calculating and representing the diff between two snapshots, or the diff
between a snapshot and the current tree.
Specifically, a new method getSnapshotDiffReport(Path, String, String) is added
to FSNamesystem to compute the snapshot diff. The snapshot diff is represented
as a SnapshotDiffReport internally. In later jiras we will add support to
present the SnapshotDiffReport to end users.
was:
This jira provides internal data structures and computation processes for
calculating and representing the diff between two snapshots, or the diff
between a snapshot and the current tree.
Specifically, a new method getSnapshotDiffReport(Path, String, String) is added
to FSNamesystem to compute the snapshot diff, which is then later represented
as a SnapshotDiffReport. In later jiras we will add support to represent the
SnapshotDiffReport to end users.
> Add capability to namenode to get snapshot diff
> -----------------------------------------------
>
> Key: HDFS-4131
> URL: https://issues.apache.org/jira/browse/HDFS-4131
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Affects Versions: Snapshot (HDFS-2802)
> Reporter: Suresh Srinivas
> Assignee: Jing Zhao
> Fix For: Snapshot (HDFS-2802)
>
> Attachments: HDFS-4131.001.patch, HDFS-4131.002.patch,
> HDFS-4131.003.patch, HDFS-4131.004.patch, HDFS-4131.005.patch,
> HDFS-4131.006.patch
>
>
> This jira provides internal data structures and computation processes for
> calculating and representing the diff between two snapshots, or the diff
> between a snapshot and the current tree.
> Specifically, a new method getSnapshotDiffReport(Path, String, String) is
> added to FSNamesystem to compute the snapshot diff. The snapshot diff is
> represented as a SnapshotDiffReport internally. In later jiras we will add
> support to present the SnapshotDiffReport to end users.
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