[
https://issues.apache.org/jira/browse/HDFS-10480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16016815#comment-16016815
]
Yiqun Lin commented on HDFS-10480:
----------------------------------
Thanks for the updated patch, [~manojg]! The latest patch almost looks good to
me now. Only one comment from me:
When the {{listOpenFiles}} command used in HA mode, the {{Tracer}} passed to
{{OpenFilesIterator}} will be null. And this will lead a NPE error. The related
codes in {{OpenFilesIterator}}.
{code}
+ public BatchedEntries<OpenFileEntry> makeRequest(Long prevId)
+ throws IOException {
+ try (TraceScope ignored = tracer.newScope("listOpenFiles")) { <== there
is a chance that tracer will be null
+ return namenode.listOpenFiles(prevId);
+ }
+ }
{code}
> Add an admin command to list currently open files
> -------------------------------------------------
>
> Key: HDFS-10480
> URL: https://issues.apache.org/jira/browse/HDFS-10480
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Kihwal Lee
> Assignee: Manoj Govindassamy
> Attachments: HDFS-10480.02.patch, HDFS-10480.03.patch,
> HDFS-10480-trunk-1.patch, HDFS-10480-trunk.patch
>
>
> Currently there is no easy way to obtain the list of active leases or files
> being written. It will be nice if we have an admin command to list open files
> and their lease holders.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
