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https://issues.apache.org/jira/browse/HDFS-16287?focusedWorklogId=677612&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-677612
]
ASF GitHub Bot logged work on HDFS-16287:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 05/Nov/21 20:15
Start Date: 05/Nov/21 20:15
Worklog Time Spent: 10m
Work Description: haiyang1987 commented on a change in pull request #3596:
URL: https://github.com/apache/hadoop/pull/3596#discussion_r743380933
##########
File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
##########
@@ -511,7 +505,16 @@ private boolean isInactive(DatanodeInfo datanode) {
private boolean isSlowNode(String dnUuid) {
return avoidSlowDataNodesForRead && slowNodesUuidSet.contains(dnUuid);
}
-
+
+ public void setAvoidSlowDataNodesForReadEnabled(boolean enable) {
Review comment:
Thanks @tomscut for your comment.
HDFS-15120 already support
BlockPlacementPolicyDefault#dfs.namenode.block-placement-policy.exclude-slow-nodes.enabled
reconfigurable. But the current way I think is heavy. Do we need to support
alone logic make excludeSlowNodesEnabled reconfigurable？
##########
File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
##########
@@ -511,7 +505,16 @@ private boolean isInactive(DatanodeInfo datanode) {
private boolean isSlowNode(String dnUuid) {
return avoidSlowDataNodesForRead && slowNodesUuidSet.contains(dnUuid);
}
-
+
+ public void setAvoidSlowDataNodesForReadEnabled(boolean enable) {
Review comment:
Thanks @tomscut for your comment.
Is there anything else that needs to be improved in the current code?
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Issue Time Tracking
-------------------
Worklog Id: (was: 677612)
Time Spent: 10h (was: 9h 50m)
> Support to make dfs.namenode.avoid.read.slow.datanode 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
> Labels: pull-request-available
> Time Spent: 10h
> Remaining Estimate: 0h
>
> 1. Consider that make dfs.namenode.avoid.read.slow.datanode reconfigurable
> and rapid rollback in case this feature
> [HDFS-16076|https://issues.apache.org/jira/browse/HDFS-16076] unexpected
> things happen in production environment
> 2. DatanodeManager#startSlowPeerCollector by parameter
> 'dfs.datanode.peer.stats.enabled' to control
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