[jira] [Commented] (SAMZA-598) Provide a tool to debug state stores

["Chris Riccomini (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SAMZA-598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14359766#comment-14359766 ] 

Chris Riccomini commented on SAMZA-598:
---------------------------------------

Should probably look similar to CheckpointTool, in terms of implementation, and CLI usage.

> Provide a tool to debug state stores
> ------------------------------------
>
>                 Key: SAMZA-598
>                 URL: https://issues.apache.org/jira/browse/SAMZA-598
>             Project: Samza
>          Issue Type: Bug
>          Components: kv
>    Affects Versions: 0.9.0
>            Reporter: Chris Riccomini
>             Fix For: 0.10.0
>
>
> There is currently no easy way to debug a Samza job when there are problems with the state store data. It would be nice to provide a tool that will:
> # Connect to a local KV state store, and dump its content.
> # Consume a changelog to and materialize a state store locally.
> Optionally, it would be nice to allow users to fetch values for a give key via a REPL. This is a little tricky, though, since the key might be serialized in Protobu, Avro, etc.
> Between 1-2, users will be able to inspect local stores of jobs that are running (1), and create a local copy of a state store for jobs that have lost their local state already (2).



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