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Type:
Improvement
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Status: Resolved
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Priority:
Minor
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Resolution: Duplicate
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Affects Version/s: Impala 2.5.0
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Fix Version/s: None
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Component/s: Catalog
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Labels:
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Target Version:
Currently the catalog cache of every Impalad holds a replica of the entire catalog. In certain scenarios (e.g. large metadata), the local catalog cache is using memory that could be used more effectively elsewhere. We should consider changing the impalad catalog cache into a proper cache with a configurable size limit and an invalidation mechanism.
- duplicates
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IMPALA-7127 Fetch-on-demand metadata for the impalad-side catalog
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- Reopened
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