Kadir Ozdemir created PHOENIX-6501:
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Summary: Use batching when joining data table rows with uncovered
index rows
Key: PHOENIX-6501
URL: https://issues.apache.org/jira/browse/PHOENIX-6501
Project: Phoenix
Issue Type: Improvement
Affects Versions: 5.1.2
Reporter: Kadir Ozdemir
PHOENIX-6458 extends the existing uncovered local index support for global
indexes. The current solution uses HBase get operations to join data table rows
with uncovered index rows on the server side. Doing a separate RPC call for
every data table row can be expensive. Instead, we can buffer lots of data row
keys in memory, use a skip scan filter and even multiple threads to issue a
separate scan for each data table region in parallel. This will reduce the cost
of join and also improve the performance.
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