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https://issues.apache.org/jira/browse/HDFS-16287?focusedWorklogId=671305&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-671305
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ASF GitHub Bot logged work on HDFS-16287:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 28/Oct/21 09:07
Start Date: 28/Oct/21 09:07
Worklog Time Spent: 10m
Work Description: haiyang1987 opened a new pull request #3596:
URL: https://github.com/apache/hadoop/pull/3596
### Description of PR
Support to make dfs.namenode.avoid.read.slow.datanode and
dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled reconfigurable
Details: HDFS-16287
### For code changes:
- [ ] Consider that make dfs.namenode.avoid.read.slow.datanode and
dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled reconfigurable
and rapid rollback in case this feature HDFS-16076 and HDFS-15879 unexpected
things happen in production environment
- [ ] Consider In DatanodeManager dealing with choosing targets for blocks
filter out slow nodes logic
- [ ] DatanodeManager#startSlowPeerCollector launched by parameter
'dfs.datanode.peer.stats.enabled' to control
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Issue Time Tracking
-------------------
Worklog Id: (was: 671305)
Remaining Estimate: 0h
Time Spent: 10m
> Support to make dfs.namenode.avoid.read.slow.datanode and
> dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled reconfigurable
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-16287
> URL: https://issues.apache.org/jira/browse/HDFS-16287
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Haiyang Hu
> Assignee: Haiyang Hu
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 1. Consider that make dfs.namenode.avoid.read.slow.datanode and
> dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled reconfigurable
> and rapid rollback in case this feature
> [HDFS-16076|https://issues.apache.org/jira/browse/HDFS-16076] and
> [HDFS-15879|https://issues.apache.org/jira/browse/HDFS-15879] unexpected
> things happen in production environment
> 2. Consider In DatanodeManager dealing with choosing targets for blocks
> filter out slow nodes logic
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