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https://issues.apache.org/jira/browse/HDFS-16504?focusedWorklogId=742264&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-742264
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ASF GitHub Bot logged work on HDFS-16504:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 16/Mar/22 12:32
Start Date: 16/Mar/22 12:32
Worklog Time Spent: 10m
Work Description: Hexiaoqiao commented on a change in pull request #4068:
URL: https://github.com/apache/hadoop/pull/4068#discussion_r827955269
##########
File path: hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
##########
@@ -4119,6 +4119,14 @@
Mover, and StoragePolicySatisfier.
</description>
</property>
+<property>
+ <name>dfs.namenode.get-blocks.check.operation</name>
+ <value>true</value>
+ <description>
+ Whether enable checkOperation when call getBlocks.
+ It is enabled (true) by default.
Review comment:
It almost look good to me. Just one nit, add "Set false to disable
checkOperation and getBlocks for Balancer will route to Standby NameNode for HA
mode setup." will be more readable for end user.
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Issue Time Tracking
-------------------
Worklog Id: (was: 742264)
Time Spent: 50m (was: 40m)
> add `dfs.namenode.get-blocks.check.operation` to enable or disable
> checkOperation when NNs process getBlocks
> ------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-16504
> URL: https://issues.apache.org/jira/browse/HDFS-16504
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover, namanode
> Affects Versions: 3.4.0
> Reporter: Max Xie
> Assignee: Max Xie
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> HDFS-13183 add a nice feature that Standby NameNode can process getBlocks
> request to reduce Active load. Namenode must set `dfs.ha.allow.stale.reads
> = true` to enable this feature. However, if we set `dfs.ha.allow.stale.reads
> = true`, Standby Namenode will be able to process all read requests, which
> may lead to yarn jobs fail because Standby Namenode is stale .
> Maybe we should add a config `dfs.namenode.get-blocks.check.operation=false`
> for namenode to disable check operation when namenode process getBlocks
> request.
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