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Posted to hdfs-issues@hadoop.apache.org by "Bharath Mundlapudi (JIRA)" <ji...@apache.org> on 2011/05/26 03:18:47 UTC
[jira] [Updated] (HDFS-1934) Fix NullPointerException when certain
File APIs return null
[ https://issues.apache.org/jira/browse/HDFS-1934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bharath Mundlapudi updated HDFS-1934:
-------------------------------------
Affects Version/s: (was: 0.20.205.0)
Fix Version/s: (was: 0.20.205.0)
> Fix NullPointerException when certain File APIs return null
> -----------------------------------------------------------
>
> Key: HDFS-1934
> URL: https://issues.apache.org/jira/browse/HDFS-1934
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.23.0
> Reporter: Bharath Mundlapudi
> Assignee: Bharath Mundlapudi
> Fix For: 0.23.0
>
>
> While testing Disk Fail Inplace, We encountered the NPE from this part of the code.
> File[] files = dir.listFiles();
> for (File f : files) {
> ...
> }
> This is kinda of an API issue. When a disk is bad (or name is not a directory), this API (listFiles, list) return null rather than throwing an exception. This 'for loop' throws a NPE exception. And same applies to dir.list() API.
> Fix all the places where null condition was not checked.
>
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