This patch implements the HiveServer2 API.
We have tested it with Lenni's patch against the tpch workload. It has also
been tested manually against Hive's beeline with queries and metadata operations.
All of the HiveServer2 code is implemented in impala-hs2-server.cc. Beeswax
code is refactored to impala-beeswax-server.cc.
HiveServer2 has a few more metadata operations. These operations go through
impala-hs2-server to ddl-executor and then to FE. The logics are implemented in
fe/src/main/java/com/cloudera/impala/service/MetadataOp.java.
Because of the Thrift union issue, I have to modify the generated c++ file.
Therefore, all the HiveServer2 thrift generated c++ code are checked into
be/src/service/hiveserver2/. Once the thrift issue is resolved, I'll remove
these files.
Change-Id: I9a8fe5a09bf250ddc43584249bdc87b6da5a5881
- making the coordinator asynchronous
- renamed ImpalaBackendService to ImpalaInternalService;
- new class ImpalaServer implements ImpalaService and ImpalaInternalService
- renaming ImpalaInternalService fields to conform to c++ style
- merged impala-service.{cc,h} and backend-service.{cc,h} into impala-server.{cc,h}
- added TStatusCode field to Status.ErrorDetail
- removed ImpalaInternalService.CloseChannel
Also removed JdbcDriverTest.java
(CDH/hive-odbc-test) passes (except those with "create table" and "show table".
We should have nightly regression of the odbc test to run against impalad.
There're still a few issues:
1. running with num_node > 0 crashes the coordinator;
2. work around for a few ODBC jiras
3. no test for bool/timestamp because ODBC doesn't support them.
review: issue 110
At the same time, this patch removes the partitionKeyRegex in favour
of explicitly sending a list of literal expressions for each file path
from the front end.
- added option to run with derby metastore, based on whether env var METASTORE_IS_DERBY is set
- emoved hardwired file locations from planner tests
- switching to linking statically against libthrift.a
Also added script rebuild.sh, which contains the build steps of buildall.sh (against impala sources).
- DataStreamSender: sender side (1:n) for a single stream
- DataStreamMgr: receiver side; singleton class for all incoming streams active at a node
Changed ExecNode::GetNext() to return eos indicator explicitly; this allows us to pass incoming TRowBatches (which may not be full) up w/o copying the data.
Added data-stream-test.
