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https://issues.apache.org/jira/browse/HDFS-2413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13207468#comment-13207468
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Tsz Wo (Nicholas), SZE commented on HDFS-2413:
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My first thought is that you may simply annotate only
DistributedFileSystem.isInSafeMode(), i.e.
{code}
@InterfaceAudience.LimitedPrivate({ "MapReduce", "HBase" })
public boolean isInSafeMode() throws IOException {
{code}
However, I am not sure if it is okay since DistributedFileSystem is annotated
as private. Let me check this.
> Add public APIs for safemode
> ----------------------------
>
> Key: HDFS-2413
> URL: https://issues.apache.org/jira/browse/HDFS-2413
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs client
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Harsh J
> Attachments: HDFS-2413.patch, HDFS-2413.patch
>
>
> Currently the APIs for safe-mode are part of DistributedFileSystem, which is
> supposed to be a private interface. However, dependent software often wants
> to wait until the NN is out of safemode. Though it could poll trying to
> create a file and catching SafeModeException, we should consider making some
> of these APIs public.
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