Hongyuan Li created HADOOP-14631:
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Summary: Distcp should add a default AtomicWorkPath properties
when using atomic
Key: HADOOP-14631
URL: https://issues.apache.org/jira/browse/HADOOP-14631
Project: Hadoop Common
Issue Type: Bug
Reporter: Hongyuan Li
Distcp should add a default AtomicWorkPath properties when using atomic
{{Distcp}}#{{configureOutputFormat}} using code below to generate atomic work
path
{code}
if (context.shouldAtomicCommit()) {
Path workDir = context.getAtomicWorkPath();
if (workDir == null) {
workDir = targetPath.getParent();
}
workDir = new Path(workDir, WIP_PREFIX + targetPath.getName()
+ rand.nextInt());
[code}
When atomic is set and tAtomicWorkPath == null, distcp will get the parent of
current WorkDir. In this case, if {{workdir}} is {{"/"}}, the parent will be
{{null}}, wich means
{{ workDir = new Path(workDir, WIP_PREFIX + targetPath.getName() +
rand.nextInt());}} will throw a nullpoint exception.
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