Francisco Guerrero created CASSSIDECAR-232:
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Summary: Enhance the Cluster Lease Claim task feature
Key: CASSSIDECAR-232
URL: https://issues.apache.org/jira/browse/CASSSIDECAR-232
Project: Sidecar for Apache Cassandra
Issue Type: Bug
Components: Configuration, Rest API
Reporter: Francisco Guerrero
I would like to propose the following enhancements for the Cluster Lease Claim
feature in Sidecar:
- Handle IllegalArgumentException thrown when resultSet doesn't contain owner
information. This is happening seldom times but it is noticeable. The source of
the issue seems to indicate an issue in the driver or Cassandra codebase. I am
able to reproduce the issue by running Sidecar locally for a long time.
However, there's no good way to reproduce it in a test.
- Better defaults for cluster lease task: Reduce the cluster lease task
execution frequency to reduce the potential for CAS contention on the
sidecar_internal.cluster_lease_v1 table in Cassandra.
- Introduce randomized delay when scheduling ClusterLeaseClaimTask: to reduce
potential races when all instances are trying to acquire the lease at the same
time
- Add new strategy to select the number of participants for the cluster lease:
This is to prevent too many participants trying to acquire the lease for
clusters with user keyspaces that are highly replicated.
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