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https://issues.apache.org/jira/browse/HDDS-1982?focusedWorklogId=306755&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-306755
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ASF GitHub Bot logged work on HDDS-1982:
----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Sep/19 22:24
Start Date: 04/Sep/19 22:24
Worklog Time Spent: 10m
Work Description: anuengineer commented on pull request #1344: HDDS-1982
Extend SCMNodeManager to support decommission and maintenance states
URL: https://github.com/apache/hadoop/pull/1344#discussion_r320998407
##########
File path:
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/NodeStatus.java
##########
@@ -0,0 +1,88 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.hadoop.hdds.scm.node;
+
+import org.apache.hadoop.hdds.protocol.proto.HddsProtos;
+
+import java.util.Objects;
+
+/**
+ * This class is used to capture the current status of a datanode. This
+ * includes its health (healthy, stale or dead) and its operation status (
+ * in_service, decommissioned and maintenance mode.
+ */
+public class NodeStatus {
+
+ private HddsProtos.NodeOperationalState operationalState;
+ private HddsProtos.NodeState health;
+
+ public NodeStatus(HddsProtos.NodeOperationalState operationalState,
+ HddsProtos.NodeState health) {
+ this.operationalState = operationalState;
+ this.health = health;
+ }
+
+ public static NodeStatus inServiceHealthy() {
+ return new NodeStatus(HddsProtos.NodeOperationalState.IN_SERVICE,
+ HddsProtos.NodeState.HEALTHY);
Review comment:
Is there a reason to allocate this each time? just create a static one and
return a reference to that, maybe? Not important at all, just wondering.
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Issue Time Tracking
-------------------
Worklog Id: (was: 306755)
Time Spent: 1h 20m (was: 1h 10m)
> Extend SCMNodeManager to support decommission and maintenance states
> --------------------------------------------------------------------
>
> Key: HDDS-1982
> URL: https://issues.apache.org/jira/browse/HDDS-1982
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: SCM
> Reporter: Stephen O'Donnell
> Assignee: Stephen O'Donnell
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Currently, within SCM a node can have the following states:
> HEALTHY
> STALE
> DEAD
> DECOMMISSIONING
> DECOMMISSIONED
> The last 2 are not currently used.
> In order to support decommissioning and maintenance mode, we need to extend
> the set of states a node can have to include decommission and maintenance
> states.
> It is also important to note that a node decommissioning or entering
> maintenance can also be HEALTHY, STALE or go DEAD.
> Therefore in this Jira I propose we should model a node state with two
> different sets of values. The first, is effectively the liveliness of the
> node, with the following states. This is largely what is in place now:
> HEALTHY
> STALE
> DEAD
> The second is the node operational state:
> IN_SERVICE
> DECOMMISSIONING
> DECOMMISSIONED
> ENTERING_MAINTENANCE
> IN_MAINTENANCE
> That means the overall total number of states for a node is the cross-product
> of the two above lists, however it probably makes sense to keep the two
> states seperate internally.
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