[jira] [Created] (CASSANALYTICS-142) SidecarCdcClient should be passed as a constructor parameter for SidecarCdc to avoid thread/resource leaks

["Jyothsna Konisa (Jira)" <ji...@apache.org>]

Jyothsna Konisa created CASSANALYTICS-142:
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             Summary: SidecarCdcClient should be passed as a constructor parameter for SidecarCdc to avoid thread/resource leaks
                 Key: CASSANALYTICS-142
                 URL: https://issues.apache.org/jira/browse/CASSANALYTICS-142
             Project: Apache Cassandra Analytics
          Issue Type: Bug
            Reporter: Jyothsna Konisa


Identified a thread/resource leaks in CDC code path

1. SidecarCdcClient object is being created for each token range inside sidecar. This object holds a reference to vertx object which is never closed. During failures, new SidecarCdcClient objects are created on each retry causing resource leaks.

2.SidecarCdcClient is not autoclosable, hence SidecarClient object reference by SidecarCdcClient is never closed.

3. StatePersister class is started but close is never called in sidecar

We should have a singleton SidecarCdcClient, adding a constructor parameter in SidecarCdc to be able to pass singleton SidecarCdcClient created in sidecar. Also making the SidecarCdcClient auto closable to be closed from sidecar while managing the lifecycle.



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