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https://issues.apache.org/jira/browse/HDFS-14172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16759262#comment-16759262
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Xiang Li commented on HDFS-14172:
---------------------------------
The UT errors reported are not related. Could get them passed on my local
machine.
* hadoop.fs.viewfs.TestViewFileSystemHdfs
* hadoop.hdfs.web.TestWebHdfsTimeouts
* hadoop.hdfs.server.datanode.TestBPOfferService
* hadoop.hdfs.server.balancer.TestBalancerWithMultipleNameNodes
> Avoid NPE when SectionName#fromString() returns null
> ----------------------------------------------------
>
> Key: HDFS-14172
> URL: https://issues.apache.org/jira/browse/HDFS-14172
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Xiang Li
> Assignee: Xiang Li
> Priority: Minor
> Attachments: HADOOP-14172.000.patch, HADOOP-14172.001.patch,
> HADOOP-14172.002.patch, HADOOP-14172.003.patch
>
>
> In FSImageFormatProtobuf.SectionName#fromString(), as follows:
> {code:java}
> public static SectionName fromString(String name) {
> for (SectionName n : values) {
> if (n.name.equals(name))
> return n;
> }
> return null;
> }
> {code}
> When the code meets an unknown section from the fsimage, the function will
> return null. Callers always operates the return value with a "switch" clause,
> like FSImageFormatProtobuf.Loader#loadInternal(), as:
> {code:java}
> switch (SectionName.fromString(n))
> {code}
> NPE will be thrown here.
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