Todd Lipcon created IMPALA-7541:
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Summary: Avoid instantiating metrics for IncompleteTables
Key: IMPALA-7541
URL: https://issues.apache.org/jira/browse/IMPALA-7541
Project: IMPALA
Issue Type: Bug
Components: Catalog
Reporter: Todd Lipcon
Currently we instantiate a Metrics object for every table. However in many
cases, users have hundreds of thousands or millions of tables and only a small
subset are loaded. This is even more likely after the new automatic
invalidation work in progress. So, we should try to minimize memory footprint
of IncompleteTable. The largest culprit there seems to be the new Metrics
object added by IMPALA-4886. We should lazily init this only on *loaded* tables.
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