[jira] Commented: (HADOOP-1629) Block CRC Unit Tests: upgrade test

["Raghu Angadi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-1629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12515064 ] 

Raghu Angadi commented on HADOOP-1629:
--------------------------------------

Any suggestions on how large the tar-gzip file should be? I can write simple text to blocks so that they compress very well. Since this is meant to be committed, what do you think is reasonable size?


> Block CRC Unit Tests: upgrade test
> ----------------------------------
>
>                 Key: HADOOP-1629
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1629
>             Project: Hadoop
>          Issue Type: Test
>          Components: dfs
>    Affects Versions: 0.14.0
>            Reporter: Nigel Daley
>            Assignee: Raghu Angadi
>            Priority: Blocker
>             Fix For: 0.14.0
>
>
> HADOOP-1286 introduced a distributed upgrade framework.  1 or more unit tests should be developed that start with a zipped up Hadoop 0.12 file system (that is included in Hadoop's src/test directory under version controlled) and attempts to upgrade it to the current version of Hadoop (ie the version that the tests are running against).  The zipped up file system should include some "interesting" files, such as:
> - zero length files
> - file with replication set higher than number of datanodes
> - file with no .crc file
> - file with corrupt .crc file
> - file with multiple blocks (will need to set dfs.block.size to a small value)
> - file with multiple checksum blocks
> - empty directory
> - all of the above again but with a different io.bytes.per.checksum setting
> The class that generates the zipped up file system should also be included in this patch.

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