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[IMPALA-7592] Planner should correctly estimate UnionNode host count - Impala - [issue]
...Currently, the planner estimates UnionNode host count to be the maximum of all its children. In reality, scheduler will put these nodes on the union of its inputs' hosts. We should update th...    Author: Balazs Jeszenszky , 2018-09-19, 12:47
[IMPALA-7587] Follow up for IMPALA-2636: consider fixing GetTables() for tables with not loaded metadata - Impala - [issue]
...Since IMPALA-2636, the HS2 GetTables() call returns the correct type (TABLE or VIEW) for tables with already loaded metadata. However, for objects not yet loaded, it just returns the default...    Author: Balazs Jeszenszky , 2018-09-18, 17:57
[IMPALA-7578] More flexible placement rules - Impala - [issue]
...Currently, placement rules can be defined based on user names or (primary/secondary) group names as a direct mapping. This promotes creating much more pools than might be needed, and leads t...    Author: Balazs Jeszenszky , 2018-09-17, 15:54
[IMPALA-7528] Division by zero when computing cardinalities of many to many joins on NULL columns - Impala - [issue]
...The following:| F00:PLAN FRAGMENT [RANDOM] hosts=1 instances=1                     || Per-Host Resources: mem-estimate=33.94MB mem-reservati...    Author: Balazs Jeszenszky , 2018-09-06, 17:18
[IMPALA-6435] Codegen crash when UNIONing CHAR(n) literals - Impala - [issue]
...A simple repro:create table test (c1 int);select cast ('a' as char(30)) as m from testunion allselect cast ('a' as char(30)) as m from test;Stack trace:#0  0x00007fb0085275e5 in raise (...    Author: Balazs Jeszenszky , 2018-08-30, 18:20
[IMPALA-7497] Consider reintroducing numNulls count in compute stats - Impala - [issue]
...IMPALA-1003 disabled numNulls calculations for performance reasons. A lot has changed since, it'd be good to reevaluate computing numNulls. The planner still has some code that uses it for c...    Author: Balazs Jeszenszky , 2018-08-28, 08:35
[IMPALA-7478] Add timer to impalad-side of DDLs - Impala - [issue]
...Currently, profiles include CatalogOpExecTimer, but aren't helpful if the time is spent on the impalad side. A scoped timer to ProcessCatalogUpdateResult would be useful for clarity.This is ...    Author: Balazs Jeszenszky , 2018-08-23, 11:36
[IMPALA-7322] Add storage wait time to profile for operations with metadata load - Impala - [issue]
...The profile of a REFRESH or of the query triggering metadata load should point out how much time was spent waiting for source systems....    Author: Balazs Jeszenszky , 2018-08-01, 20:49
[IMPALA-5826] Document IMPALA-2248 - Impala - [issue]
...IMPALA-2248 added the possibility of defining session timeout for each HS2 session. This isn't currently mentioned in the docs.A usage summary for Impala JDBC/ODBC driver would be needed as ...    Author: Balazs Jeszenszky , 2018-07-25, 19:28
[IMPALA-7346] Capture locality data for debug - Impala - [issue]
...With IMPALA-5872, it will be possible to capture and recreate query-specific details when things break.Currently there's no way to include data locality information in such test cases. For e...    Author: Balazs Jeszenszky , 2018-07-25, 10:43