Joe McDonnell created IMPALA-15021:
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Summary: Remove one of the gperftools tcmalloc thread cache metrics
Key: IMPALA-15021
URL: https://issues.apache.org/jira/browse/IMPALA-15021
Project: IMPALA
Issue Type: Task
Components: Backend
Affects Versions: Impala 5.0.0
Reporter: Joe McDonnell
In IMPALA-14874, we added additional gperftools TCMalloc metrics. This included
both tcmalloc.current-total-thread-cache-bytes and
tcmalloc.thread-cache-free-bytes, which map down to the gperftools metrics
tcmalloc.current_total_thread_cache_bytes and tcmalloc.thread_cache_free_bytes
respectively. Inside the gperftools code, these are actually the same counter,
so we can remove one.
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