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https://issues.apache.org/jira/browse/CONNECTORS-728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13693861#comment-13693861
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Karl Wright edited comment on CONNECTORS-728 at 6/26/13 9:26 AM:
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Hi Osuka-san,
Actually, looking harder, I think you did understand my point, but missed one
particular place which needs to be looked at. Specifically:
{code}
if (session.getFileSystem().exists(fileStatus.getPath())) {
{code}
This occurs twice; exists() throws IOException so I am pretty sure it should
not be called lightly. But perhaps there is another way to get the same
information. What happens, for instance, when you get the FileStatus of a
deleted file? Does it come back null? If it does, just check fileStatus ==
null instead.
Actually, according to the docs online, this will throw FileNotFoundException
if the path does not exist. If you catch that specially from GetObject, you
will know whether the file exists or not without needing to call exists().
was (Author: [email protected]):
Hi Osuka-san,
Actually, looking harder, I think you did understand my point, but missed one
particular place which needs to be looked at. Specifically:
{code}
if (session.getFileSystem().exists(fileStatus.getPath())) {
{code}
This occurs twice; exists() throws IOException so I am pretty sure it should
not be called lightly. But perhaps there is another way to get the same
information. What happens, for instance, when you get the FileStatus of a
deleted file? Does it come back null? If it does, just check fileStatus ==
null instead.
> Add HDFS connector.
> -------------------
>
> Key: CONNECTORS-728
> URL: https://issues.apache.org/jira/browse/CONNECTORS-728
> Project: ManifoldCF
> Issue Type: Improvement
> Components: HDFS connector
> Affects Versions: ManifoldCF 1.2
> Reporter: Minoru Osuka
> Assignee: Minoru Osuka
> Priority: Minor
> Fix For: ManifoldCF 1.3
>
>
> I would like to suggest you the HDFS Connector.
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