Github user liancheng commented on the pull request:
https://github.com/apache/spark/pull/8196#issuecomment-131887455
Seems that now Parquet logs are successfully suppressed, but I hit the
opposite problem: I can't get Parquet logs written even if I turn log level
under INFO. Instead, I always see this when Parquet logs should be printed:
```
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further
details.
```
However, slf4j-log4j12 classes are already properly packaged into the
assembly jar. This is irrelevant to Hive isolated client loader, since I tested
this issue without enabling `-Phive`.
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