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https://issues.apache.org/jira/browse/HDFS-11494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HDFS-11494:
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Attachment: HDFS-11494.001.patch
Patch attached. The sample output log:
{code}
2017-03-03 21:06:01,026 [main] DEBUG blockmanagement.DatanodeDescriptor
(DatanodeDescriptor.java:chooseStorage4Block(681)) - The node 127.0.0.1:9866
does not have enough DISK space (required=10, scheduled=0, remaining=0).
{code}
> Log message when DN is not selected for block replication
> ---------------------------------------------------------
>
> Key: HDFS-11494
> URL: https://issues.apache.org/jira/browse/HDFS-11494
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0-alpha2
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Minor
> Attachments: HDFS-11494.001.patch
>
>
> In HDFS-8946, a important message was removed.
> {code}
> if (requiredSize > remaining - scheduledSize) {
> logNodeIsNotChosen(storage, "the node does not have enough "
> + storage.getStorageType() + " space"
> + " (required=" + requiredSize
> + ", scheduled=" + scheduledSize
> + ", remaining=" + remaining + ")");
> return false;
> }
> {code}
> This log is important since it can tell us why DN is not selected for block
> replication. And it will be good for us to debug issues.
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