[
https://issues.apache.org/jira/browse/HDFS-16568?focusedWorklogId=766444&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-766444
]
ASF GitHub Bot logged work on HDFS-16568:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 05/May/22 05:44
Start Date: 05/May/22 05:44
Worklog Time Spent: 10m
Work Description: virajjasani opened a new pull request, #4264:
URL: https://github.com/apache/hadoop/pull/4264
### Description of PR
DFSAdmin provides option to initiate or query the status of reconfiguration
operation on only specific host based on host:port provided by user. It would
be good to provide an ability to initiate such operations in bulk, on all live
datanodes.
### How was this patch tested?
Dev cluster and UT.
Sample outputs:
```
$ bin/hdfs dfsadmin -reconfig datanode livenodes start
2022-05-04 22:17:44,695 WARN util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes where
applicable
Started reconfiguration task on node [host1:port1].
Started reconfiguration task on node [host2:port2].
Started reconfiguration task on node [host3:port3].
Started reconfiguration task on node [host4:port4].
Started reconfiguration task on node [host5:port5].
Starting of reconfiguration task successful on 5 nodes, failed on 0 nodes.
$ bin/hdfs dfsadmin -reconfig datanode livenodes status
2022-05-04 21:57:36,506 WARN util.NativeCodeLoader: Unable to load
native-hadoop library for your platform... using builtin-java classes where
applicable
Reconfiguring status for node [host1:port1]: started at Wed May 04 21:57:04
PDT 2022 and finished at Wed May 04 21:57:04 PDT 2022.
SUCCESS: Changed property dfs.datanode.peer.stats.enabled
From: "false"
To: "true"
Reconfiguring status for node [host2:port2]: started at Wed May 04 21:57:06
PDT 2022 and finished at Wed May 04 21:57:06 PDT 2022.
FAILED: Change property dfs.datanode.peer.stats.enabled
From: "false"
To: "true"
Reconfiguring status for node [host3:port3]: started at Wed May 04 21:57:08
PDT 2022 and finished at Wed May 04 21:57:08 PDT 2022.
FAILED: Change property dfs.datanode.peer.stats.enabled
From: "false"
To: "true"
Reconfiguring status for node [host4:port4]: started at Wed May 04 21:57:10
PDT 2022 and finished at Wed May 04 21:57:10 PDT 2022.
FAILED: Change property dfs.datanode.peer.stats.enabled
From: "false"
To: "true"
Reconfiguring status for node [host5:port5]: started at Wed May 04 21:57:12
PDT 2022 and finished at Wed May 04 21:57:12 PDT 2022.
FAILED: Change property dfs.datanode.peer.stats.enabled
From: "false"
To: "true"
Retrieval of reconfiguration status successful on 5 nodes, failed on 0 nodes.
```
### For code changes:
- [X] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
Issue Time Tracking
-------------------
Worklog Id: (was: 766444)
Remaining Estimate: 0h
Time Spent: 10m
> dfsadmin -reconfig option to start/query reconfig on all live datanodes
> -----------------------------------------------------------------------
>
> Key: HDFS-16568
> URL: https://issues.apache.org/jira/browse/HDFS-16568
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> DFSAdmin provides option to initiate or query the status of reconfiguration
> operation on only specific host based on host:port provided by user. It would
> be good to provide an ability to initiate such operations in bulk, on all
> live datanodes.
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