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https://issues.apache.org/jira/browse/HADOOP-10571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16362053#comment-16362053
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Akira Ajisaka commented on HADOOP-10571:
----------------------------------------
Thanks [~boky01] for continuing the work! Overall looks good. Minor comments
from me:
* DNS.java L434: {{e.getMessage()}} still exists. It can be replaced with
{{LOG.*(Object, Throwable)}}.
* AbstractService.java L257: Should it be {{LOG.debug("notefailure ",
exception)}}?
* OpenFileCtx.java L709, L747, and L1233: Can we avoid {{e.toString()}}?
* OpenFileCtx.java and RpcProgramNfs3.java: {{handle.dumpFileHandle()}}
contains string concatenation, so I'm thinking it should be guarded with
{{LOG.isDebugEnabled()}}.
* OpenFileCtx.java L1113: It should be guarded with {{LOG.isDebugEnabled()}}
to avoid calling {{Nfs3Utils.getElapsedTime(commit.startTime)}}.
* OpenFileCtx.java L2214: {{LOG.debug(Nfs3Utils.READ_RPC_START + xid)}} should
be replaced with {{LOG.debug("{}{}", Nfs3Utils.READ_RPC_START, xid)}}. Similar
issues are in L2216 and L2219.
* DataNode.java L1939: {{id.toString()}} can be replaced with {{id}}.
* DataNode.java L2436: {{Arrays.asList}} seems costly, so it should be guarded
with {{isDebugEnabled()}}.
* DataNode.java L2726: Can we avoid {{ex.toString()}}?
* DataXceiver.java L304 and L313: Can we avoid {{t.toString()}}?
* DataXceiver.java L922, L961, L997, L1039, and L1100: Can we avoid
{{ioe.toString()}}?
* Gridmix.java L203: {{inputDir.toString()}} can be replaced with {{inputDir}}.
> Use Log.*(Object, Throwable) overload to log exceptions
> -------------------------------------------------------
>
> Key: HADOOP-10571
> URL: https://issues.apache.org/jira/browse/HADOOP-10571
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.4.0
> Reporter: Arpit Agarwal
> Assignee: Andras Bokor
> Priority: Major
> Attachments: HADOOP-10571.01.patch, HADOOP-10571.01.patch,
> HADOOP-10571.02.patch, HADOOP-10571.03.patch, HADOOP-10571.04.patch,
> HADOOP-10571.05.patch, HADOOP-10571.06.patch
>
>
> When logging an exception, we often convert the exception to string or call
> {{.getMessage}}. Instead we can use the log method overloads which take
> {{Throwable}} as a parameter.
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