We are on Cassandra 2.2.5 and I am constantly seeing warning messages about 
large partitions in system.log even though our setting for partition warning 
threshold is set to 4096 (MB).

WARN  [CompactionExecutor:43180] 2017-06-14 20:02:13,189 
BigTableWriter.java:184 - Writing large partition 
tsg_ae/logs_by_user:114303419784957147 (17187 bytes)
WARN  [CompactionExecutor:43180] 2017-06-14 20:02:13,190 
BigTableWriter.java:184 - Writing large partition 
tsg_ae/logs_by_user:820590487870502244 (2613 bytes)
WARN  [CompactionExecutor:43180] 2017-06-14 20:02:13,191 
BigTableWriter.java:184 - Writing large partition 
tsg_ae/logs_by_user:421586605444858333 (54923 bytes)

Here's what we have in cassandra.yaml.

# Log a warning when compacting partitions larger than this value
compaction_large_partition_warning_threshold_mb: 4096

So wondering if such a warning is normal or is there something wrong in our 
configuration or is it a bug?

I have looked at https://issues.apache.org/jira/browse/CASSANDRA-9643.

Any pointers will be greatly appreciated.

Thanks,
Jayesh

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