Francisco Guerrero created CASSANDRASC-140:
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Summary: Updating traffic shaping options throws
IllegalStateException
Key: CASSANDRASC-140
URL: https://issues.apache.org/jira/browse/CASSANDRASC-140
Project: Sidecar for Apache Cassandra
Issue Type: Bug
Reporter: Francisco Guerrero
Assignee: Francisco Guerrero
When updating the traffic shaping options in Sidecar in
{{org.apache.cassandra.sidecar.server.Server#updateTrafficShapingOptions}}, we
are encountering a bug in vert.x. The problem happens in
{{io.vertx.core.net.impl.TCPServerBase#updateTrafficShapingOptions}} where the
{{trafficShapingHandler}} is {{null}} for {{childHandler}}s. When a {{null}}
{{trafficShapingHandler}} is encountered, the following exception is thrown:
{code:java}
throw new IllegalStateException("Unable to update traffic shaping options
because the server was not configured " +
"to use traffic shaping during startup");
{code}
I propose a stopgap measure to fix the issue in Sidecar while we wait for a new
vert.x release that includes a fix for this issue. Without a fix, we risk
leaving Sidecar in unknown state after updating the traffic shaping options.
Because applying the traffic shaping options can succeed or fail before
encountering the exception. This can potentially leave a cluster of Sidecar
servers in an inconsistent state across all Sidecars. The only option to return
to a well-known state is by restarting the Sidecar process across the cluster
with the updated traffic shaping options applied in the yaml before starting
the process.
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