swagle commented on a change in pull request #1344: HDDS-1982 Extend
SCMNodeManager to support decommission and maintenance states
URL: https://github.com/apache/hadoop/pull/1344#discussion_r322918560
##########
File path:
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/states/NodeStateMap.java
##########
@@ -309,4 +381,61 @@ private void checkIfNodeExist(UUID uuid) throws
NodeNotFoundException {
throw new NodeNotFoundException("Node UUID: " + uuid);
}
}
+
+ /**
+ * Create a list of datanodeInfo for all nodes matching the passed states.
+ * Passing null for one of the states acts like a wildcard for that state.
+ *
+ * @param opState
+ * @param health
+ * @return List of DatanodeInfo objects matching the passed state
+ */
+ private List<DatanodeInfo> filterNodes(
+ NodeOperationalState opState, NodeState health) {
+ if (opState != null && health != null) {
Review comment:
Can we write Line 395-440 with one simple stream().filter? Nothing wrong
with code itself but just a thought.
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