Hyukjin Kwon created SPARK-61319:
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Summary: Connection-layer parity: ChannelBuilder keepalive and
userAgent, retried release_session, no token in connection-string errors
Key: SPARK-61319
URL: https://issues.apache.org/jira/browse/SPARK-61319
Project: Spark
Issue Type: Bug
Components: Connect
Affects Versions: connect-rust-4.3.0
Reporter: Hyukjin Kwon
The drop-in ChannelBuilder has no keepalive_* or userAgent properties, so
DefaultChannelBuilder("sc://host/;grpc_keepalive_time_ms=30000").keepalive_time_ms
raises AttributeError; PySpark 4.3.0 returns 30000.
release_session is sent once, so a transient UNAVAILABLE at stop leaves the
server session until its timeout; PySpark retries it under the retry policy.
A bad port in a connection string quotes the whole URL, token included
(sc://localhost:notaport/;token=SECRET); PySpark's message names only the port,
and a missing host quotes the URL with the token redacted.
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