[CDAP-20758] Set max netty direct memory #15274
Merged
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In Spark v3.2.0 and later, max netty direct memory must be >= max Spark remote block fetch size (ref).
So we set netty's max direct memory = remote block fetch size.
Spark remote block fetch size was set to a large value to address some issues with joins as part of CDAP-16461.
This fixes the following executor pod failure: