Adam Antal created HDFS-14056:
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Summary: 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
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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