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https://issues.apache.org/jira/browse/HDFS-979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13055154#comment-13055154
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Jim Plush commented on HDFS-979:
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There seem to be several other places where a generic message like this is
displayed...
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➺ Ack --java "All specified directories are not accessible"
hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceStorage.java
134: "All specified directories are not accessible or do not exist.");
hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/DataStorage.java
188: "All specified directories are not accessible or do not exist.");
hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java
201: "All specified directories are not accessible or do not exist.");
> FSImage should specify which dirs are missing when refusing to come up
> ----------------------------------------------------------------------
>
> Key: HDFS-979
> URL: https://issues.apache.org/jira/browse/HDFS-979
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Steve Loughran
> Priority: Minor
>
> When {{FSImage}} can't come up as either it has no data or edit dirs, it
> tells me this
> {code}
> java.io.IOException: All specified directories are not accessible or do not
> exist.
> {code}
> What it doesn't do is say which of the two attributes are missing. This would
> be beneficial to anyone trying to track down the problem. Also, I don't think
> the message is correct. It's bailing out because dataDirs.size() == 0 ||
> editsDirs.size() == 0 , because a list is empty -not because the dirs aren't
> there, as there hasn't been any validation yet.
> More useful would be
> # Explicit mention of which attributes are null
> # Declare that this is because they are not in the config
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