Re: Bucketing/Rolling Sink: New timestamp appeded to the part file name everytime a new part file is rolled

Posted by Aljoscha Krettek on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Bucketing-Rolling-Sink-New-timestamp-appeded-to-the-part-file-name-everytime-a-new-part-file-is-rolld-tp15315p15328.html

Hi Raja,

I think you can in fact do this by implementing a custom Bucketer. You can have a look at BasePathBucketer and extend that to include the timestamp in the path that is returned. You should probably clamp the timestamp so that you don't get a new path for every millisecond.

Best,

Aljoscha

On 1. Sep 2017, at 08:18, Piotr Nowojski <[hidden email]> wrote:

Hi,

BucketingSink doesn’t support the feature that you are requesting, you can not specify a dynamically generated prefix/suffix.

Piotrek

On Aug 31, 2017, at 7:12 PM, Raja.Aravapalli <[hidden email]> wrote:

 

Hi,

 

I have a flink application that is streaming data into HDFS and I am using Bucketing Sink for that. And, I want to know if is it possible to rename the part files that is being created in the base hdfs directory.

 

Right now I am using the below code for including the timestamp into part-file name, but the problem I am facing is the timestamp is not changing for the new part file that is being rolled!

 

 

BucketingSink<String> HdfsSink = new BucketingSink<String> (hdfsOutputPath);

HdfsSink.setBucketer(new BasePathBucketer<String>());
HdfsSink.setBatchSize(1024 * 1024 * hdfsOutputBatchSizeInMB); // this means 'hdfsOutputBatchSizeInMB' MB
HdfsSink.setPartPrefix("PART-FILE-" + Long.toString(System.currentTimeMillis()));

 

 

Can someone please suggest me, what code changes I can try so that I get a new timestamp for every part file that is being rolled new?

 

 

Thanks a lot. 

 

Regards,

Raja.