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https://issues.apache.org/jira/browse/HDFS-15313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17158709#comment-17158709
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Stephen O'Donnell commented on HDFS-15313:
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Looks to me like the only difference between the 3.1 and trunk path is imports.
Yetus gives a green run so I am +1 on the 3.1 patch.
The 2.10 patch fails to compile for me locally. [~shashikant] could you give it
another check please?
{code}
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on
project hadoop-hdfs: Compilation failure: Compilation failure:
[ERROR]
/Users/sodonnell/source/upstream_hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/Diff.java:[167,27]
incompatible types
[ERROR] required: java.util.List<E>
[ERROR] found: java.util.List<capture#1 of ? extends java.lang.Object>
[ERROR]
/Users/sodonnell/source/upstream_hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/Diff.java:[198,27]
incompatible types
[ERROR] required: java.util.List<E>
[ERROR] found: java.util.List<capture#2 of ? extends java.lang.Object>
[ERROR] -> [Help 1]
{code}
> Ensure inodes in active filesytem are not deleted during snapshot delete
> ------------------------------------------------------------------------
>
> Key: HDFS-15313
> URL: https://issues.apache.org/jira/browse/HDFS-15313
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: snapshots
> Reporter: Shashikant Banerjee
> Assignee: Shashikant Banerjee
> Priority: Major
> Fix For: 3.2.2, 3.3.1, 3.4.0
>
> Attachments: HDFS-15313-branch-3.1.001.patch, HDFS-15313.000.patch,
> HDFS-15313.001.patch, HDFS-15313.branch-2.10.patch,
> HDFS-15313.branch-2.8.patch
>
>
> After HDFS-13101, it was observed in one of our customer deployments that
> delete snapshot ends up cleaning up inodes from active fs which can be
> referred from only one snapshot as the isLastReference() check for the parent
> dir introduced in HDFS-13101 may return true in certain cases. The aim of
> this Jira to add a check to ensure if the Inodes are being referred in the
> active fs , should not get deleted while deletion of snapshot happens.
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