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[DRILL-847] Merging Receiver requires to canonicalize schemas of input batches - Drill - [issue]
...The Merge Receivers assumes all the incoming batches have the same schemas. If the incoming batches happen to have different schemas, the run-time generated code for merge receiver would not...
http://issues.apache.org/jira/browse/DRILL-847    Author: Jinfeng Ni, 2014-05-28, 23:15
[DRILL-665] Drill throw NPE or UnsupportedOperationException when case expression contains null value - Drill - [issue]
...Hi Tim,Per discussion yesterday,  we found Drill will throw NPE or UnsupportedOperationException when case expression contains null value.  (null value is added for the optional 'e...
http://issues.apache.org/jira/browse/DRILL-665    Author: Jinfeng Ni, 2014-05-28, 23:15
[DRILL-810] Add isSafe() to NullableValueVector.  Run-time code should check isSafe() for null value to ensure spare available.   - Drill - [issue]
...In Drill's run-time generated code, if an expression's output type is of nullable, the run-time will call setSafe() only when the output value is not null. When the output value is null, the...
http://issues.apache.org/jira/browse/DRILL-810    Author: Jinfeng Ni, 2014-05-23, 03:24
[DRILL-776] Support selection vector sv2 and sv4 in partition sender - Drill - [issue]
...Currently, Partition sender does not accept sv2 or sv4. If the incoming batch is sv2 or sv4, a SelectionVectorRemover (SVR) op is required to remove sv2 or sv4.   SVR is essentially doi...
http://issues.apache.org/jira/browse/DRILL-776    Author: Jinfeng Ni, 2014-05-20, 17:02
[DRILL-685] Use proper trait in Drill Logical rule. Propagate trait from child to parent whenever possible. - Drill - [issue]
...There are two issues in several Drill Logical Rule.1.  When we call convert() to convert the child node from 'None' to 'Logical', we pass in the parent's trait.  This may not be ri...
http://issues.apache.org/jira/browse/DRILL-685    Author: Jinfeng Ni, 2014-05-12, 00:14
[DRILL-684] Use parquet row count in cost-based optimization.  Use parquet row count, column value count to optimize count() aggregate function. - Drill - [issue]
...Parquet group scan provides the exact row count and the exact value count for each individual column.  Such information could be leveraged in the following two ways:1. Use the count in ...
http://issues.apache.org/jira/browse/DRILL-684    Author: Jinfeng Ni, 2014-05-12, 00:14
[DRILL-580] Drill logical or physical rules should not specify child operand - Drill - [issue]
...Most of Drill logical and physical rules (implements RelOptRule) are essentially conversion rules.  For conversion rule, it's not required to specify the child operand in the rule's pat...
http://issues.apache.org/jira/browse/DRILL-580    Author: Jinfeng Ni, 2014-05-06, 23:53
[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
[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
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB