[
https://issues.apache.org/jira/browse/HDFS-6727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14282277#comment-14282277
]
Lei (Eddy) Xu commented on HDFS-6727:
-------------------------------------
Great question, [~jiangyu1211].
Our original design was relying on DataNode's own timeout to do the
blockreport, mostly for the simplicity reason. You can use {{hdfs dfsadmin
-triggerBlockReport}} to trigger block report if necessary. If there is a
strong desire to always send blockreport after swapping a drive, I'd add it in
a followup JIRA.
bq. obvious you have data in it.
We were actually thinking about removing bad disks and adding larger empty
disks as major cases. As mentioned above, if adding a loaded disk is a very
common task, I'd love to file another JIRA to let DN send block report right
after how swap job finishes.
> Refresh data volumes on DataNode based on configuration changes
> ---------------------------------------------------------------
>
> Key: HDFS-6727
> URL: https://issues.apache.org/jira/browse/HDFS-6727
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: 2.5.0, 2.4.1
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Labels: datanode
> Fix For: 2.6.0
>
> Attachments: HDFS-6727.000.delta-HDFS-6775.txt, HDFS-6727.001.patch,
> HDFS-6727.002.patch, HDFS-6727.003.patch, HDFS-6727.004.patch,
> HDFS-6727.005.patch, HDFS-6727.006.patch, HDFS-6727.006.patch,
> HDFS-6727.007.patch, HDFS-6727.008.patch, HDFS-6727.combo.patch,
> patchFindBugsOutputhadoop-hdfs.txt
>
>
> HDFS-1362 requires DataNode to reload configuration file during the runtime,
> so that DN can change the data volumes dynamically. This JIRA reuses the
> reconfiguration framework introduced by HADOOP-7001 to enable DN to
> reconfigure at runtime.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
