aajisaka commented on a change in pull request #3664:
URL: https://github.com/apache/hadoop/pull/3664#discussion_r762113040
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File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicy.java
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@@ -261,4 +261,16 @@ protected String getRack(final DatanodeInfo datanode) {
}
}
}
+
+ /**
+ * Updates the value used for excludeSlowNodesEnabled, which is set by
+ * {@code
DFSConfigKeys.DFS_NAMENODE_BLOCKPLACEMENTPOLICY_EXCLUDE_SLOW_NODES_ENABLED_KEY}
+ * initially.
+ *
+ * @param enable true, we will filter out slow nodes
+ * when choosing targets for blocks, otherwise false not filter.
+ */
+ public abstract void setExcludeSlowNodesEnabled(boolean enable);
+
+ public abstract boolean getExcludeSlowNodesEnabled();
Review comment:
This interface is marked as `@Private`, so adding abstract methods is
okay.
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