peay created BEAM-2326:
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Summary: Verbose INFO logging with stateful DoFns and Dataflow
Key: BEAM-2326
URL: https://issues.apache.org/jira/browse/BEAM-2326
Project: Beam
Issue Type: Bug
Components: runner-dataflow
Affects Versions: 0.6.0
Reporter: peay
Assignee: Daniel Halperin
I am seeing a lot of INFO level logging:
{code}
jsonPayload: {
logger:
"com.google.cloud.dataflow.worker.runners.worker.BatchModeUngroupingParDoFn"
message: "Processing timers for key {} for stateful DoFn"
}
jsonPayload: {
message: "Processing key KV{one of my keys} for stateful DoFn"
logger:
"com.google.cloud.dataflow.worker.runners.worker.BatchModeUngroupingParDoFn"
}
{code}
out of one of my stateful DoFn. There is one such group of logs for each key I
process, which leads to a very large amount of logs and possibly to a
significant slowdown.
Also, not sure if the {{Processing timers}} log message is missing some string
interpolation or if the empty key is on purpose.
At any rate, this seems more like something for {{DEBUG}} than {{INFO}} given
the large volume.
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