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https://issues.apache.org/jira/browse/ACCUMULO-716?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548822#comment-13548822
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Eric Newton commented on ACCUMULO-716:
--------------------------------------
I was able to reproduce this.
* start accumulo
* use TestIngest to put some data in
* kill everything
* find the last block of the last WAL file in the NameNode logs
* find the block, and delete the last bunch of bytes
* start accumulo
{noformat}
org.apache.hadoop.fs.ChecksumException: Checksum error:
/blk_5930498692645763206:of:/accumulo/wal/127.0.0.1+9997/25ae29dc-cb3f-4980-93ea-e2099a394382
at 3539456
org.apache.hadoop.fs.ChecksumException: Checksum error:
/blk_5930498692645763206:of:/accumulo/wal/127.0.0.1+9997/25ae29dc-cb3f-4980-93ea-e2099a394382
at 3539456
at
org.apache.hadoop.fs.FSInputChecker.verifySum(FSInputChecker.java:277)
at
org.apache.hadoop.fs.FSInputChecker.readChecksumChunk(FSInputChecker.java:241)
at
org.apache.hadoop.fs.FSInputChecker.fill(FSInputChecker.java:176)
at
org.apache.hadoop.fs.FSInputChecker.read1(FSInputChecker.java:193)
at
org.apache.hadoop.fs.FSInputChecker.read(FSInputChecker.java:158)
at
org.apache.hadoop.hdfs.DFSClient$BlockReader.read(DFSClient.java:1460)
at
org.apache.hadoop.hdfs.DFSClient$DFSInputStream.readBuffer(DFSClient.java:2175)
at
org.apache.hadoop.hdfs.DFSClient$DFSInputStream.read(DFSClient.java:2227)
at java.io.DataInputStream.readFully(DataInputStream.java:178)
at java.io.DataInputStream.readFully(DataInputStream.java:152)
at
org.apache.accumulo.core.data.Mutation.readFields(Mutation.java:578)
{noformat}
I was trying to see what would happen if the disk-full occurred while trying to
write out the checksum data.
> Corrupt WAL file
> ----------------
>
> Key: ACCUMULO-716
> URL: https://issues.apache.org/jira/browse/ACCUMULO-716
> Project: Accumulo
> Issue Type: Bug
> Components: tserver
> Environment: java version "1.6.0_33", hadoop-0.20.2-cdh3u3
> Reporter: Josh Elser
> Assignee: Eric Newton
>
> Ran wikisearch-ingest. Ended up filling up a drive used by HDFS and things
> failed not-so-gracefully. Upon restart, log recovery started, appeared to
> finish (failed HDFS checksum on one WAL entry), and left Accumulo in a state
> where no tablets were assigned.
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