Vinod KC created SPARK-51685:
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Summary: Excessive Info logging from RocksDb operations casing too
big executor stderr files
Key: SPARK-51685
URL: https://issues.apache.org/jira/browse/SPARK-51685
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 4.1.0
Reporter: Vinod KC
Long-running structured streaming applications with RocksDb statestore is
failing after some time due to "No space left on device" error.
Checked the executor logs and noticed that the volume of executor logs is
crazy. Around 1GB of data for 1 minute of run.
Each info log entry were printing more than 4000 lines (list for files in
RockDB operations)
Eg:
{code:java}
25/03/19 10:38:32 INFO RocksDBFileManager
[StateStoreId(opId=0,partId=734,name=default),
queryRunId=30d232ab-0d2a-454d-a217-5b2debfe10e9,
queryId=4c8ca990-9fd4-4b69-8f90-ce933b3f4ef3]: Saving checkpoint files for
version 285264 - 2912 files
/local_disk0/spark-fe801ff3-f023-4554-8237-8914d37c1485/executor-41cadbd8-1863-4fc9-986d-607fa1f6d797/spark-7990e75a-1c8e-48a6-b59f-b174342e7837/[StateStoreId(opId=0,partId=734,name=default),
queryRunId=30d232ab-0d2a-454d-a217-5b2debfe10e9,
queryId=4c8ca990-9fd4-4b69-8f90-ce933b3f4ef3]-506ec0a7-fd75-4a75-9b09-717a64ee3478/checkpoint-42a1f8e8-a467-4c6a-9581-401d352a46bf/005040.log
- 3135 bytes
/local_disk0/spark-fe801ff3-f023-4554-8237-8914d37c1485/executor-41cadbd8-1863-4fc9-986d-607fa1f6d797/spark-7990e75a-1c8e-48a6-b59f-b174342e7837/[StateStoreId(opId=0,partId=734,name=default),
queryRunId=30d232ab-0d2a-454d-a217-5b2debfe10e9,
queryId=4c8ca990-9fd4-4b69-8f90-ce933b3f4ef3]-506ec0a7-fd75-4a75-9b09-717a64ee3478/checkpoint-42a1f8e8-a467-4c6a-9581-401d352a46bf/013865.log
- 1368 bytes
....{code}
Here Info logs printing all checkpoint file paths. These verbos info logs
affects streaming application disk space as most users keep Info as the default
log level.
So it is better to use Debug log to log such details.
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