Maxwell Guo created IMPALA-12402:
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Summary: Add some configurations for CatalogMetaProvider's cache_
Key: IMPALA-12402
URL: https://issues.apache.org/jira/browse/IMPALA-12402
Project: IMPALA
Issue Type: Improvement
Components: fe
Reporter: Maxwell Guo
when the cluster contains many db and tables such as if there are more than
100000 tables, and if we restart the impalad , the local cache_
CatalogMetaProvider's need to doing some loading process.
As we know that the goole's guava cache 's concurrencyLevel os set to 4 by
default.
but if there is many tables the loading process will need more time and
increase the probability of lock contention, see
[here|https://github.com/google/guava/blob/master/guava/src/com/google/common/cache/CacheBuilder.java#L437].
So we propose to add some configurations here, the first is the concurrency of
cache.
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