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https://issues.apache.org/jira/browse/HDFS-17642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17892234#comment-17892234
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ASF GitHub Bot commented on HDFS-17642:
---------------------------------------
Jtdellaringa commented on code in PR #7127:
URL: https://github.com/apache/hadoop/pull/7127#discussion_r1813190021
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java:
##########
@@ -408,17 +420,26 @@ private long init(List<DatanodeStorageReport> reports) {
for(DatanodeStorageReport r : reports) {
final DDatanode dn = dispatcher.newDatanode(r.getDatanodeInfo());
final boolean isSource = Util.isIncluded(sourceNodes,
dn.getDatanodeInfo());
+ final boolean isExcludedSource = Util.isIncluded(sourceNodes,
dn.getDatanodeInfo());
+ final boolean isTarget = Util.isIncluded(targetNodes,
dn.getDatanodeInfo());
+ final boolean isExcludedTarget = Util.isIncluded(targetNodes,
dn.getDatanodeInfo());
Review Comment:
Updated
> Support specifying Datanodes to exclude for balancing at source/target
> granularity
> ----------------------------------------------------------------------------------
>
> Key: HDFS-17642
> URL: https://issues.apache.org/jira/browse/HDFS-17642
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer & mover
> Reporter: Joseph Dell'Aringa
> Assignee: Joseph Dell'Aringa
> Priority: Major
> Labels: pull-request-available
>
> In some cases it can be useful to exclude a list of datanodes from being
> selected as a target but remaining an option for a source and vice-versa.
> The fix for this ticket will add an additional exclude list for source and
> target datanodes.
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