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Posted to common-dev@hadoop.apache.org by "lohit vijayarenu (JIRA)" <ji...@apache.org> on 2008/04/25 19:49:56 UTC
[jira] Created: (HADOOP-3314) DataBlockScanner (via periodic
verification) could be improved to check for corrupt block length
DataBlockScanner (via periodic verification) could be improved to check for corrupt block length
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Key: HADOOP-3314
URL: https://issues.apache.org/jira/browse/HADOOP-3314
Project: Hadoop Core
Issue Type: Improvement
Components: dfs
Environment: All
Reporter: lohit vijayarenu
DataBlockScanner should also check for truncated blocks and report them as corrupt block to the NN
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[jira] Commented: (HADOOP-3314) DataBlockScanner (via periodic
verification) could be improved to check for corrupt block length
Posted by "Raghu Angadi (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-3314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12674770#action_12674770 ]
Raghu Angadi commented on HADOOP-3314:
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Brian, this issue has little to do with HADOOP-4692. This is pretty simple : block verification should make sure that block length, crc lengths are correct (w.r.t each other) and any runtime expected length (if there is one).
For e.g. if the original block length is 64MB and was truncated to 63MB (a 512 byte boundary) for some reason, it would not be caught by the current verification.
> DataBlockScanner (via periodic verification) could be improved to check for corrupt block length
> ------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3314
> URL: https://issues.apache.org/jira/browse/HADOOP-3314
> Project: Hadoop Core
> Issue Type: Improvement
> Components: dfs
> Environment: All
> Reporter: Lohit Vijayarenu
>
> DataBlockScanner should also check for truncated blocks and report them as corrupt block to the NN
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