Csaba Ringhofer created IMPALA-13331:
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Summary: Add metrics to CatalogdTableInvalidator
Key: IMPALA-13331
URL: https://issues.apache.org/jira/browse/IMPALA-13331
Project: IMPALA
Issue Type: Improvement
Components: Catalog
Reporter: Csaba Ringhofer
CatalogdTableInvalidator only logs when it invalidates a table but there are
no metrics to track the number of invalidations. This makes it hard to get a
picture of the effects of invalidate_tables_timeout_s
/invalidate_tables_gc_old_gen_full_threshold.
A few examples for useful metrics:
- number of times invalidateSome() was called
- number of table invalidations due to mem pressure
- number of table invalidations due to ttl
- time spent in invalidateSome()
- time spent in invalidateOlderThan()
for the number of invalidations/time spent metrics probably having separate
sum/max/avg metrics would be nice
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