- added PlanNode.numNodes, PlanNode.avgRowSize and PlanNode.computeStats()
- fixing up some cardinality estimates
- Planner now tries to do a cost-based decision between broadcast join and join with full repartitioning (both inputs)
- ExchangeNode now distinguishes between its input and output row descriptor: the output potentially contains more tuples
- fixed problem related to cancellation and concurrent hash table builds.
Not included:
- partitioned joins that take advantage of existing partitions of the inputs; those will have to wait for a follow-on change
This works around a problem with computing table stats via the Hive Meta Store client
API. When executing these stements via the MetaStoreClient, all tables were getting a
num_rows=0 value returned from the ANALYZE TABLE query.
Adds support for:
* ALTER TABLE <table> PARTITION (partitionSpec) SET FILEFORMAT
* ALTER TABLE <table> PARTITION (partitionSpec) SET LOCATION
This enables setting the location and fileformat of specific partitions.
This patch adds support for
- ALTER TABLE ADD|REPLACE COLUMNS
- ALTER TABLE DROP COLUMN
- ALTER TABLE ADD/DROP PARTITION
- ALTER TABLE SET FILEFORMAT
- ALTER TABLE SET LOCATION
- ALTER TABLE RENAME
* Changed frontend analysis for HBase tables
* Changed Thrift messages to allow HBase as a sink type.
* JNI Wrapper around htable
* Create hbase-table-sink
* Create hbase-table-writer
* Static init lots of JNI related code for HBase.
* Cleaned up some cpplint issues.
* Changed junit analysis tests
* Create a new HBase test table.
* Added functional tests for HBase inserts.
This patch adds support for the following SQL constructs
- Unary + operator
- The ALL keyword, in SELECT ALL and SELECT aggregate_func(ALL *)
- REAL and INTEGER as type synonyms for DOUBLE and INT respectively
- The AS keyword after a table spec. e.g. SELECT * FROM tbl AS t0
This makes partition pruning more effective by extending it to predicates that are fully bound by the partition column,
e.g., '<col> IN (1, 2, 3)' will also be used to prune partitions, in addition to equality and binary comparisons.
