nandakumar131 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_r321626983
##########
File path:
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/states/NodeStateMap.java
##########
@@ -43,7 +45,7 @@
/**
* Represents the current state of node.
*/
- private final ConcurrentHashMap<NodeState, Set<UUID>> stateMap;
+ private final ConcurrentHashMap<UUID, NodeStatus> stateMap;
Review comment:
It is better to have `NodeStatus` inside `DatanodeInfo` rather than having
two separate fields.
Yes, `stateMap` helped us to easily get the list/count of nodes in a
specific state, but with the current changes it is not straight forward to
maintain `state -> list of nodes`. In any case we will be iteration over all
the available nodes to get list of nodes in a given state.
The number of nodes in a cluster should not go beyond 3-4 order of
magnitude. We can re-visit and optimize this, if we run into any performance
issue.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: common-issues-h...@hadoop.apache.org
