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https://issues.apache.org/jira/browse/HDFS-12425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16174400#comment-16174400
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Mukul Kumar Singh commented on HDFS-12425:
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Thanks for the review [~xyao] I have incorporated almost all of the review
comments. The current patch works on the ozone rest client. I am working on
another patch which will use the rpc client, this patch will also take care of
using the new streaming read/write interfaces as well.
1. OzoneFileSystem.java
LINE 151/168/269/321, NIT: change the log level from debug to trace, also
suggest using parameterized syntax to reduce logging overhead.
bq. done
Line 183: the try/catch is not being used to catch any exception that we plan
to handle, should we remove it?
bq. This exception needs to ignored as this means that the file currently does
not exists and a new file can thus be created.
Line 254: suggest using parameterized syntax to reduce logging overhead.
bq. done
Line 268-273: can you add document somewhere mentioning how ozfs differentiate
directory/file by the trailing "/"?
Maybe define a OZONE_URI_SEPARATOR "/" as I've seen "/" used in many places if
there is not one exist. The other choice is to use URI#resolve to handle this
without worrying about the "/"
bq. done
OzoneInputStream.java
1. Line 70/81: suggest using URI to handle this.
bq. Can you please elaborate this comment :)
2. Line 53/92: can we use a stream (Bucket#readKey) instead of a local
file(Bucket#getKey) here for better perf?
This will affect other API implementation based on RandomAccessFile
bq. Yes, I wanted to use this jira to provide the basic functionality of
read/write/open and getFileInfo. I will replace these functions when the new
put key api's are in.
OzoneOutputStream.java
Similar to the inputstream, can we avoid the stream backed by local file that
write to the bucket when close()?
bq. same as for the intputstream.
TestOzoneFileInterfaces.java
Line 113: inputStream needs to be closed to avoid leaking. Consider using
try-with-resource to achieve that easily.
bq. done
> Ozone: OzoneFileSystem: OzoneFileystem read/write/create/open/getFileInfo APIs
> ------------------------------------------------------------------------------
>
> Key: HDFS-12425
> URL: https://issues.apache.org/jira/browse/HDFS-12425
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Affects Versions: HDFS-7240
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Labels: ozoneMerge
> Fix For: HDFS-7240
>
> Attachments: HDFS-12425-HDFS-7240.001.patch,
> HDFS-12425-HDFS-7240.002.patch, HDFS-12425-HDFS-7240.003.patch
>
>
> This jira will add create/open and read/write APIs for OzoneFileSystem.
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