Roman Kondakov created IGNITE-11756: ---------------------------------------
Summary: SQL: implement a table row count statistics for the local queries Key: IGNITE-11756 URL: https://issues.apache.org/jira/browse/IGNITE-11756 Project: Ignite Issue Type: Improvement Components: sql Reporter: Roman Kondakov Row count statistics should help the H2 optimizer to select the better query execution plan. Currently the row count supplied to H2 engine is hardcoded value == 10000 (see {{org.h2.index.Index#getRowCountApproximation}}). As a first step we can provide an actual table size in the case of local query. To prevent counting size on each invocation we can cache row count value and invalidate it in some cases: * Rebalancing * Multiple updates (after the initial loading) * On timeout (i.e. 1 minute) -- This message was sent by Atlassian JIRA (v7.6.3#76005)