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Posted to common-dev@hadoop.apache.org by "Kan Zhang (JIRA)" <ji...@apache.org> on 2009/03/12 21:56:50 UTC
[jira] Commented: (HADOOP-5481) Namenode returns lease recovery
requests with other requests
[ https://issues.apache.org/jira/browse/HADOOP-5481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681486#action_12681486 ]
Kan Zhang commented on HADOOP-5481:
-----------------------------------
{noformat}
//check lease recovery
cmd = nodeinfo.getLeaseRecoveryCommand(Integer.MAX_VALUE);
if (cmd != null) {
return new DatanodeCommand[] {cmd};
}
ArrayList<DatanodeCommand> cmds = new ArrayList<DatanodeCommand>(2);
//check pending replication
cmd = nodeinfo.getReplicationCommand(
maxReplicationStreams - xmitsInProgress);
if (cmd != null) {
cmds.add(cmd);
}
//check block invalidation
cmd = nodeinfo.getInvalidateBlocks(blockInvalidateLimit);
if (cmd != null) {
cmds.add(cmd);
}
{noformat}
> Namenode returns lease recovery requests with other requests
> ------------------------------------------------------------
>
> Key: HADOOP-5481
> URL: https://issues.apache.org/jira/browse/HADOOP-5481
> Project: Hadoop Core
> Issue Type: Improvement
> Reporter: Kan Zhang
> Assignee: Kan Zhang
>
> HADOOP-5034 modified NN to return both replication and deletion requests to DN in one reply to a heartbeat. However, the lease recovery request is still sent separately by itself. Is there a reason for this? If not, I suggest we combine them together. This will make it less confusing when adding new types of requests, which are combinable as well.
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