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[DRILL-491] Support project push-down into scan operator - Drill - [issue]
...Currently, the scan operator will read all the columns from the data source, and pass all the columns to down-stream operator. In order to improve performance of Drill query, we should inste...
http://issues.apache.org/jira/browse/DRILL-491    Author: Jinfeng Ni, 2014-05-04, 17:58
[expand - 3 more] - Re: Review Request 20762: DRILL-491 : Push project into scan operator. - Drill - [mail # dev]
...Thanks! Now I enable the option of removing trailing white space and unused imports in Eclipse. This seems to be related to map, which is currently wip. I'll revisit this, if the design of m...
   Author: Jinfeng Ni, 2014-05-01, 01:31
[expand - 2 more] - Re: Review Request 20806: DRILL-571: Predicate push down into HBase scan - Drill - [mail # dev]
...What do you mean by "not traversing the expression tree"? I thought we use ExprVisitor, which will traverse the expr tree. so, for condition like "row_key = 'value1' or row_key = 'value2'", ...
   Author: Jinfeng Ni, 2014-04-29, 15:46
[expand - 1 more] - Re: Review Request 20804: DRILL-494: Filter Pushdown into Scan Operator - Drill - [mail # dev]
...Also, I feel the title of this JIRA probably is a bit misleading, since the most of the change is not about filter pushdown. In stead, the change is to provide the interface necessary to all...
   Author: Jinfeng Ni, 2014-04-29, 01:14
Re: Review Request 20741: Cost model to include distribution cost and enable new plans - Drill - [mail # dev]
...This is an automatically generated e-mail. To reply, visit:https://reviews.apache.org/r/20741/#review41572exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/DrillFilterRelBase...
   Author: Jinfeng Ni, 2014-04-27, 23:28
[DRILL-379] Support part of commonly used String functions and Math functions in Drill. - Drill - [issue]
...We will add the support of some commonly used String functions and Math functions (over int, floating-point number). 1. like2. similar3. regexp_replace4. char_length4. oct_length5. bit_lengt...
http://issues.apache.org/jira/browse/DRILL-379    Author: Jinfeng Ni, 2014-04-20, 02:42
[DRILL-359] Drill client thread may hang forever, even after it receives all the expected data - Drill - [issue]
...Run a physical plan which contains union-exchange and broadcast-exchange. The client thread hangs there forever, even after it receives all the expected rows....
http://issues.apache.org/jira/browse/DRILL-359    Author: Jinfeng Ni, 2014-04-20, 02:40
[DRILL-450] Insert Exchange operators automically in physical plan, in order to execute query in distributed way. - Drill - [issue]
...Today, the only way to run a query in distributed way in Drill is to manually insert exchange operators into a physical plan, and submit the physical plan to Drill.  We will add a set o...
http://issues.apache.org/jira/browse/DRILL-450    Author: Jinfeng Ni, 2014-04-20, 02:34
Re: Can't Start Drill . - Drill - [mail # user]
...That doc seems a bit old.  If you want to use local ZK, try this forsqlline:./sqlline -u jdbc:drill:zk=local -n admin -p adminthen, in sqlline, run query like:select R_REGIONKEY from df...
   Author: Jinfeng Ni, 2014-04-18, 17:36
[DRILL-535] HbaseGroupScan should return more accurate size information.   - Drill - [issue]
...Currently, HbaseGroupScan.getSize() returns a default number, which will impact planner's ability to make a right decision, when it decides a good join order. Ideally, getSize() should get r...
http://issues.apache.org/jira/browse/DRILL-535    Author: Jinfeng Ni, 2014-04-16, 23:42
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