diff options
| author | Tathagata Das <tathagata.das1565@gmail.com> | 2016-05-31 15:57:01 -0700 |
|---|---|---|
| committer | Michael Armbrust <michael@databricks.com> | 2016-05-31 15:57:01 -0700 |
| commit | 90b11439b3d4540f48985e87dcc99749f0369287 (patch) | |
| tree | deab5a578c9fa2044764c2e8c0b34d1a6bfdbef9 /build | |
| parent | dfe2cbeb437a4fa69bec3eca4ac9242f3eb51c81 (diff) | |
| download | spark-90b11439b3d4540f48985e87dcc99749f0369287.tar.gz spark-90b11439b3d4540f48985e87dcc99749f0369287.tar.bz2 spark-90b11439b3d4540f48985e87dcc99749f0369287.zip | |
[SPARK-15517][SQL][STREAMING] Add support for complete output mode in Structure Streaming
## What changes were proposed in this pull request?
Currently structured streaming only supports append output mode. This PR adds the following.
- Added support for Complete output mode in the internal state store, analyzer and planner.
- Added public API in Scala and Python for users to specify output mode
- Added checks for unsupported combinations of output mode and DF operations
- Plans with no aggregation should support only Append mode
- Plans with aggregation should support only Update and Complete modes
- Default output mode is Append mode (**Question: should we change this to automatically set to Complete mode when there is aggregation?**)
- Added support for Complete output mode in Memory Sink. So Memory Sink internally supports append and complete, update. But from public API only Complete and Append output modes are supported.
## How was this patch tested?
Unit tests in various test suites
- StreamingAggregationSuite: tests for complete mode
- MemorySinkSuite: tests for checking behavior in Append and Complete modes.
- UnsupportedOperationSuite: tests for checking unsupported combinations of DF ops and output modes
- DataFrameReaderWriterSuite: tests for checking that output mode cannot be called on static DFs
- Python doc test and existing unit tests modified to call write.outputMode.
Author: Tathagata Das <tathagata.das1565@gmail.com>
Closes #13286 from tdas/complete-mode.
Diffstat (limited to 'build')
0 files changed, 0 insertions, 0 deletions