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Ewen Cheslack-Postava commented on KAFKA-3947: ---------------------------------------------- [~kawamuray] Thanks for the contribution. The CLI tools are considered public API, so additions like this should be proposed on the mailing list and ultimately need a KIP to be accepted. This allows everyone to discuss and settle on the best approach before we commit to supporting and maintaining compatibility for an interface. Here's, I wonder if the partition reassignment tool is the right place for this feature? Why not use the kafka-topics command? It seems like that already gives you all the info you want (though perhaps not currently in the format you want). > kafka-reassign-partitions.sh should support dumping current assignment > ---------------------------------------------------------------------- > > Key: KAFKA-3947 > URL: https://issues.apache.org/jira/browse/KAFKA-3947 > Project: Kafka > Issue Type: Improvement > Components: tools > Affects Versions: 0.10.0.0 > Reporter: Yuto Kawamura > Assignee: Yuto Kawamura > Priority: Minor > Fix For: 0.10.1.0 > > > When I building my own tool to perform reassignment of partitions, I realized > that there's no way to dump the current partition assignment in machine > parsable format such as JSON. > Actually giving {{\-\-generate}} option to the kafka-reassign-partitions.sh > script dumps the current assignment of topic given by > {{\-\-topics-to-assign-json-file}} but it's very inconvenient because of: > - I want the dump containing all topics. That is, I wanna skip generating the > list of current topics to pass it to the generate command. > - The output is concatenated with the result of reassignment so can't do > simply something like: {{kafka-reassign-partitions.sh --generate ... > > current-assignment.json}} > - Don't need to ask kafka to generate reassginment to get the current > assignment in the first place. > Here I'd like to add the {{\-\-dump}} option to kafka-reassign-partitions.sh. > I was wondering whether this functionality should be provided by > {{kafka-reassign-partitions.sh}} or {{kafka-topics.sh}} but now I think > {{kafka-reassign-partitions.sh}} should be much proper as the resulting JSON > should be in the format of {{\-\-reassignment-json-file}} which sticks to > this command. > Will follow up the patch implements this shortly. -- This message was sent by Atlassian JIRA (v6.3.4#6332)