Yifan Cai created CASSANALYTICS-193:
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Summary: Sidecar Client maxPoolSize Option Silently Ignored by
HTTP Connection Pool
Key: CASSANALYTICS-193
URL: https://issues.apache.org/jira/browse/CASSANALYTICS-193
Project: Apache Cassandra Analytics
Issue Type: Bug
Components: Reader
Reporter: Yifan Cai
The Sidecar client's maxPoolSize configuration option is only applied to
Vert.x's internal worker thread pool (Sidecar.java), never to the underlying
HttpClientConfig used by VertxHttpClient to build the WebClient. As a result,
the HTTP connection pool that actually bounds concurrent SSTable-download
requests silently falls back to HttpClientConfig's own hardcoded default of 20
connections, regardless of what a user configures. This can cause download
requests to queue behind the connection limit and stall long enough to trip the
600s BufferingInputStream timeout during bulk reads.
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