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https://issues.apache.org/jira/browse/HDFS-14056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16689375#comment-16689375
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Adam Antal commented on HDFS-14056:
-----------------------------------
Thank for the patch [~ayushtkn] and [~vinayrpet] for the commit.
> Fix error messages in HDFS-12716
> --------------------------------
>
> Key: HDFS-14056
> URL: https://issues.apache.org/jira/browse/HDFS-14056
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs
> Affects Versions: 2.10.0, 3.2.0, 3.0.4, 3.1.2
> Reporter: Adam Antal
> Assignee: Ayush Saxena
> Priority: Minor
> Fix For: 2.10.0, 3.0.4, 3.1.2, 3.3.0, 3.2.1
>
> Attachments: HDFS-14056-01.patch, HDFS-14056-02.patch
>
>
> There are misleading error messages in the committed HDFS-12716 patch.
> As I saw in the code in DataNode.java:startDataNode
> {code:java}
> throw new DiskErrorException("Invalid value configured for "
> + "dfs.datanode.failed.volumes.tolerated - " + volFailuresTolerated
> + ". Value configured is either greater than -1 or >= "
> + "to the number of configured volumes (" + volsConfigured + ").");
> }
> {code}
> Here the error message seems a bit misleading. The error comes up when the
> given quantity in the configuration set to volsConfigured is set lower than
> -1 but in that case the error should say something like "Value configured is
> either _less_ than -1 or >= ...".
> Also the general error message in DataNode.java
> {code:java}
> public static final String MAX_VOLUME_FAILURES_TOLERATED_MSG = "should be
> greater than -1";
> {code}
> May be better changed to "should be greater than _or equal to_ -1" to be
> precise, as -1 is a valid choice.
> In hdfs-default.xml I couldn't understand the phrase "The range of the value
> is -1 now, -1 represents the minimum of volume valids is 1." It might be
> better to write something clearer like "The minimum is -1 representing 1
> valid remaining volume".
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