Check for zero size block meta file when updating a block.

• Key: HADOOP-4778
• Type: Bug
• Status: Closed
• Resolution: Fixed
• Priority: Blocker
• Assignee: Tsz Wo (Nicholas), SZE
• Reporter: Tsz Wo (Nicholas), SZE
• Fix Version/s: 0.18.3

Description

In case of datanode running out of disk space, block meta files may be created with zero length. We should detect this obvious problem when updating a block.

Comments

[Tsz Wo (Nicholas), SZE]

4769_20081203.patch: Check for zero size block meta file.

[Tsz Wo (Nicholas), SZE]

4778_20081204.patch: should be this file.

[Tsz Wo (Nicholas), SZE]

     [exec] -1 overall.  

     [exec]     +1 @author.  The patch does not contain any @author tags.

     [exec]     -1 tests included.  The patch doesn't appear to include any new or modified tests.
     [exec]                         Please justify why no tests are needed for this patch.

     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.

     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.

     [exec]     +1 Eclipse classpath. The patch retains Eclipse classpath integrity.

The change is trivial. No new tests added.

[Tsz Wo (Nicholas), SZE]

Passed all tests locally.

[Hairong Kuang]

+1

[Tsz Wo (Nicholas), SZE]

4778_20081204_0.18.patch: for 0.18

[Tsz Wo (Nicholas), SZE]

I just committed this.

[Hudson]

Integrated in Hadoop-trunk #680 (See http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/680/)