[SPARK-54551][CONNECT][TESTS][FOLLOWUP] Redirect Test Spark connect server output stream to files #53275
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cloud-fan
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pan3793
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cloud-fan
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… the if (debug) check
cloud-fan
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What changes were proposed in this pull request?
Currently, the Spark Connect test server's stdout and stderr are discarded when SPARK_DEBUG_SC_JVM_CLIENT=false, making it difficult to debug test failures.
This PR enables log4j logging for Test Spark Connect server in all test modes (both debug and non-debug) by always configuring log4j2.properties.
Why are the changes needed?
When
SPARK_DEBUG_SC_JVM_CLIENT=falseSparkConnectJdbcDataTypeSuite randomly hangs because the child server process blocks on write() calls when stdout/stderr pipe buffers fill up. Without consuming the output, the buffers reach capacity and cause the process to block indefinitely.
Instead of
Redirect.DISCARD, redirect the logs into log4j filesDoes this PR introduce any user-facing change?
No
How was this patch tested?
Tested and confirmed that log files are created when
SPARK_DEBUG_SC_JVM_CLIENT=false build/sbt "connect-client-jdbc/testOnly org.apache.spark.sql.connect.client.jdbc.SparkConnectJdbcDataTypeSuite"OR
SPARK_DEBUG_SC_JVM_CLIENT=true build/sbt "connect-client-jdbc/testOnly org.apache.spark.sql.connect.client.jdbc.SparkConnectJdbcDataTypeSuite"Was this patch authored or co-authored using generative AI tooling?
No.