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https://issues.apache.org/jira/browse/HDFS-483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12733448#action_12733448
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Tsz Wo (Nicholas), SZE commented on HDFS-483:
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> ... it seems to be the only reference to this member.
For the index, it is used in run(..) showed below for determining the pipeline
position.
{code}
+ public void run(DataNode datanode) {
+ final Pipeline p = DataTransferTestUtil.getPipeline();
+ if (p.contains(index, datanode.dnRegistration)) {
+ throw new OutOfMemoryError("FI: " + currentTest
+ + ", datanode=" + datanode.dnRegistration.getName());
+ }
+ }
{code}
> Data transfer (aka pipeline) implementation cannot tolerate exceptions
> ----------------------------------------------------------------------
>
> Key: HDFS-483
> URL: https://issues.apache.org/jira/browse/HDFS-483
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node, hdfs client
> Reporter: Tsz Wo (Nicholas), SZE
> Attachments: h483_20090709.patch, h483_20090713.patch,
> h483_20090717.patch
>
>
> Data transfer was tested with simulated exceptions as below:
> # create files with dfs
> # write 1 byte
> # close file
> # open the same file
> # read the 1 byte and compare results
> The file was closed successfully but we got an IOException(Could not get
> block locations...) when the file was reopened for reading.
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