| Commit message (Collapse) | Author | Age | Files | Lines |
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Add save/load for feature.py. Meanwhile, add save/load for `ElementwiseProduct` in Scala side and fix a bug of missing `setDefault` in `VectorSlicer` and `StopWordsRemover`.
In this PR I ignore the `RFormula` and `RFormulaModel` because its Scala implementation is pending in https://github.com/apache/spark/pull/9884. I'll add them in this PR if https://github.com/apache/spark/pull/9884 gets merged first. Or add a follow-up JIRA for `RFormula`.
Author: Xusen Yin <yinxusen@gmail.com>
Closes #11203 from yinxusen/SPARK-13036.
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## What changes were proposed in this pull request?
The default value of regularization parameter for `LogisticRegression` algorithm is different in Scala and Python. We should provide the same value.
**Scala**
```
scala> new org.apache.spark.ml.classification.LogisticRegression().getRegParam
res0: Double = 0.0
```
**Python**
```
>>> from pyspark.ml.classification import LogisticRegression
>>> LogisticRegression().getRegParam()
0.1
```
## How was this patch tested?
manual. Check the following in `pyspark`.
```
>>> from pyspark.ml.classification import LogisticRegression
>>> LogisticRegression().getRegParam()
0.0
```
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #11519 from dongjoon-hyun/SPARK-13676.
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_verify_type
## What changes were proposed in this pull request?
This PR makes the `_verify_type` in `types.py` more strict, also check if numeric value is within allowed range.
## How was this patch tested?
newly added doc test.
Author: Wenchen Fan <wenchen@databricks.com>
Closes #11492 from cloud-fan/py-verify.
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## What changes were proposed in this pull request?
This PR fixes typos in comments and testcase name of code.
## How was this patch tested?
manual.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #11481 from dongjoon-hyun/minor_fix_typos_in_code.
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via option()
## What changes were proposed in this pull request?
This PR adds the support to specify compression codecs for both ORC and Parquet.
## How was this patch tested?
unittests within IDE and code style tests with `dev/run_tests`.
Author: hyukjinkwon <gurwls223@gmail.com>
Closes #11464 from HyukjinKwon/SPARK-13543.
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## What changes were proposed in this pull request?
The changes proposed were to add train-validation-split to pyspark.ml.tuning.
## How was the this patch tested?
This patch was tested through unit tests located in pyspark/ml/test.py.
This is my original work and I license it to Spark.
Author: JeremyNixon <jnixon2@gmail.com>
Closes #11335 from JeremyNixon/tvs_pyspark.
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DataFrame
## What changes were proposed in this pull request?
Remove `map`, `flatMap`, `mapPartitions` from python DataFrame, to prepare for Dataset API in the future.
## How was this patch tested?
existing tests
Author: Wenchen Fan <wenchen@databricks.com>
Closes #11445 from cloud-fan/python-clean.
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This is to fix a long-time annoyance: Whenever we add a new algorithm to pyspark.ml, we have to add it to the ```__all__``` list at the top. Since we keep it alphabetized, it often creates a lot more changes than needed. It is also easy to add the Estimator and forget the Model. I'm going to switch it to have one algorithm per line.
This also alphabetizes a few out-of-place classes in pyspark.ml.feature. No changes have been made to the moved classes.
CC: thunterdb
Author: Joseph K. Bradley <joseph@databricks.com>
Closes #10927 from jkbradley/ml-python-all-list.
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function call
https://issues.apache.org/jira/browse/SPARK-13507
https://issues.apache.org/jira/browse/SPARK-13509
## What changes were proposed in this pull request?
This PR adds the support to write CSV data directly by a single call to the given path.
Several unitests were added for each functionality.
## How was this patch tested?
This was tested with unittests and with `dev/run_tests` for coding style
Author: hyukjinkwon <gurwls223@gmail.com>
Author: Hyukjin Kwon <gurwls223@gmail.com>
Closes #11389 from HyukjinKwon/SPARK-13507-13509.
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format
Part of task for [SPARK-11219](https://issues.apache.org/jira/browse/SPARK-11219) to make PySpark MLlib parameter description formatting consistent. This is for the regression module. Also, updated 2 params in classification to read as `Supported values:` to be consistent.
closes #10600
Author: vijaykiran <mail@vijaykiran.com>
Author: Bryan Cutler <cutlerb@gmail.com>
Closes #11404 from BryanCutler/param-desc-consistent-regression-SPARK-12633.
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default parameters consistent in Scala and Python
## What changes were proposed in this pull request?
* The default value of ```regParam``` of PySpark MLlib ```LogisticRegressionWithLBFGS``` should be consistent with Scala which is ```0.0```. (This is also consistent with ML ```LogisticRegression```.)
* BTW, if we use a known updater(L1 or L2) for binary classification, ```LogisticRegressionWithLBFGS``` will call the ML implementation. We should update the API doc to clarifying ```numCorrections``` will have no effect if we fall into that route.
* Make a pass for all parameters of ```LogisticRegressionWithLBFGS```, others are set properly.
cc mengxr dbtsai
## How was this patch tested?
No new tests, it should pass all current tests.
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #11424 from yanboliang/spark-13545.
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## What changes were proposed in this pull request?
After SPARK-13028, we should add Python API for MaxAbsScaler.
## How was this patch tested?
unit test
Author: zlpmichelle <zlpmichelle@gmail.com>
Closes #11393 from zlpmichelle/master.
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Part of task for [SPARK-11219](https://issues.apache.org/jira/browse/SPARK-11219) to make PySpark MLlib parameter description formatting consistent. This is for the tree module.
closes #10601
Author: Bryan Cutler <cutlerb@gmail.com>
Author: vijaykiran <mail@vijaykiran.com>
Closes #11353 from BryanCutler/param-desc-consistent-tree-SPARK-12634.
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Add export/import for all estimators and transformers(which have Scala implementation) under pyspark/ml/regression.py.
yanboliang Please help to review.
For doctest, I though it's enough to add one since it's common usage. But I can add to all if we want it.
Author: Tommy YU <tummyyu@163.com>
Closes #11000 from Wenpei/spark-13033-ml.regression-exprot-import and squashes the following commits:
3646b36 [Tommy YU] address review comments
9cddc98 [Tommy YU] change base on review and pr 11197
cc61d9d [Tommy YU] remove default parameter set
19535d4 [Tommy YU] add export/import to regression
44a9dc2 [Tommy YU] add import/export for ml.regression
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PySpark
## What changes were proposed in this pull request?
QuantileDiscretizer in Python should also specify a random seed.
## How was this patch tested?
unit tests
Author: Yu ISHIKAWA <yuu.ishikawa@gmail.com>
Closes #11362 from yu-iskw/SPARK-13292 and squashes the following commits:
02ffa76 [Yu ISHIKAWA] [SPARK-13292][ML][PYTHON] QuantileDiscretizer should take random seed in PySpark
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## What changes were proposed in this pull request?
Python API supports mode save/load in FPGrowth
JIRA: [https://issues.apache.org/jira/browse/SPARK-7106](https://issues.apache.org/jira/browse/SPARK-7106)
## How was the this patch tested?
The patch is tested with Python doctest.
Author: Kai Jiang <jiangkai@gmail.com>
Closes #11321 from vectorijk/spark-7106.
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## What changes were proposed in this pull request?
* Scala DataFrameStatFunctions: Added version of approxQuantile taking a List instead of an Array, for Python compatbility
* Python DataFrame and DataFrameStatFunctions: Added approxQuantile
## How was this patch tested?
* unit test in sql/tests.py
Documentation was copied from the existing approxQuantile exactly.
Author: Joseph K. Bradley <joseph@databricks.com>
Closes #11356 from jkbradley/approx-quantile-python.
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vectorized scanner.
Some parts of the engine rely on UnsafeRow which the vectorized parquet scanner does not want
to produce. This add a conversion in Physical RDD. In the case where codegen is used (and the
scan is the start of the pipeline), there is no requirement to use UnsafeRow. This patch adds
update PhysicallRDD to support codegen, which eliminates the need for the UnsafeRow conversion
in all cases.
The result of these changes for TPCDS-Q19 at the 10gb sf reduces the query time from 9.5 seconds
to 6.5 seconds.
Author: Nong Li <nong@databricks.com>
Closes #11141 from nongli/spark-13250.
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## What changes were proposed in this pull request?
When we pass a Python function to JVM side, we also need to send its context, e.g. `envVars`, `pythonIncludes`, `pythonExec`, etc. However, it's annoying to pass around so many parameters at many places. This PR abstract python function along with its context, to simplify some pyspark code and make the logic more clear.
## How was the this patch tested?
by existing unit tests.
Author: Wenchen Fan <wenchen@databricks.com>
Closes #11342 from cloud-fan/python-clean.
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The current implementation of statistics of UnaryNode does not considering output (for example, Project may product much less columns than it's child), we should considering it to have a better guess.
We usually only join with few columns from a parquet table, the size of projected plan could be much smaller than the original parquet files. Having a better guess of size help we choose between broadcast join or sort merge join.
After this PR, I saw a few queries choose broadcast join other than sort merge join without turning spark.sql.autoBroadcastJoinThreshold for every query, ended up with about 6-8X improvements on end-to-end time.
We use `defaultSize` of DataType to estimate the size of a column, currently For DecimalType/StringType/BinaryType and UDT, we are over-estimate too much (4096 Bytes), so this PR change them to some more reasonable values. Here are the new defaultSize for them:
DecimalType: 8 or 16 bytes, based on the precision
StringType: 20 bytes
BinaryType: 100 bytes
UDF: default size of SQL type
These numbers are not perfect (hard to have a perfect number for them), but should be better than 4096.
Author: Davies Liu <davies@databricks.com>
Closes #11210 from davies/statics.
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MLlib
## What changes were proposed in this pull request?
In order to provide better and consistent result, let's change the default value of MLlib ```LogisticRegressionWithLBFGS convergenceTol``` from ```1E-4``` to ```1E-6``` which will be equal to ML ```LogisticRegression```.
cc dbtsai
## How was the this patch tested?
unit tests
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #11299 from yanboliang/spark-13429.
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format
Part of task for [SPARK-11219](https://issues.apache.org/jira/browse/SPARK-11219) to make PySpark MLlib parameter description formatting consistent. This is for the fpm and recommendation modules.
Closes #10602
Closes #10897
Author: Bryan Cutler <cutlerb@gmail.com>
Author: somideshmukh <somilde@us.ibm.com>
Closes #11186 from BryanCutler/param-desc-consistent-fpmrecc-SPARK-12632.
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in other comments
## What changes were proposed in this pull request?
This PR tries to fix all typos in all markdown files under `docs` module,
and fixes similar typos in other comments, too.
## How was the this patch tested?
manual tests.
Author: Dongjoon Hyun <dongjoon@apache.org>
Closes #11300 from dongjoon-hyun/minor_fix_typos.
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and other tuning for Word2Vec
add support of arbitrary length sentence by using the nature representation of sentences in the input.
add new similarity functions and add normalization option for distances in synonym finding
add new accessor for internal structure(the vocabulary and wordindex) for convenience
need instructions about how to set value for the Since annotation for newly added public functions. 1.5.3?
jira link: https://issues.apache.org/jira/browse/SPARK-12153
Author: Yong Gang Cao <ygcao@amazon.com>
Author: Yong-Gang Cao <ygcao@users.noreply.github.com>
Closes #10152 from ygcao/improvementForSentenceBoundary.
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## What changes were proposed in this pull request?
This PR adds equality operators to UDT classes so that they can be correctly tested for dataType equality during union operations.
This was previously causing `"AnalysisException: u"unresolved operator 'Union;""` when trying to unionAll two dataframes with UDT columns as below.
```
from pyspark.sql.tests import PythonOnlyPoint, PythonOnlyUDT
from pyspark.sql import types
schema = types.StructType([types.StructField("point", PythonOnlyUDT(), True)])
a = sqlCtx.createDataFrame([[PythonOnlyPoint(1.0, 2.0)]], schema)
b = sqlCtx.createDataFrame([[PythonOnlyPoint(3.0, 4.0)]], schema)
c = a.unionAll(b)
```
## How was the this patch tested?
Tested using two unit tests in sql/test.py and the DataFrameSuite.
Additional information here : https://issues.apache.org/jira/browse/SPARK-13410
Author: Franklyn D'souza <franklynd@gmail.com>
Closes #11279 from damnMeddlingKid/udt-union-all.
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This PR introduces several major changes:
1. Replacing `Expression.prettyString` with `Expression.sql`
The `prettyString` method is mostly an internal, developer faced facility for debugging purposes, and shouldn't be exposed to users.
1. Using SQL-like representation as column names for selected fields that are not named expression (back-ticks and double quotes should be removed)
Before, we were using `prettyString` as column names when possible, and sometimes the result column names can be weird. Here are several examples:
Expression | `prettyString` | `sql` | Note
------------------ | -------------- | ---------- | ---------------
`a && b` | `a && b` | `a AND b` |
`a.getField("f")` | `a[f]` | `a.f` | `a` is a struct
1. Adding trait `NonSQLExpression` extending from `Expression` for expressions that don't have a SQL representation (e.g. Scala UDF/UDAF and Java/Scala object expressions used for encoders)
`NonSQLExpression.sql` may return an arbitrary user facing string representation of the expression.
Author: Cheng Lian <lian@databricks.com>
Closes #10757 from liancheng/spark-12799.simplify-expression-string-methods.
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outside of the doctests
Some of the new doctests in ml/clustering.py have a lot of setup code, move the setup code to the general test init to keep the doctest more example-style looking.
In part this is a follow up to https://github.com/apache/spark/pull/10999
Note that the same pattern is followed in regression & recommendation - might as well clean up all three at the same time.
Author: Holden Karau <holden@us.ibm.com>
Closes #11197 from holdenk/SPARK-13302-cleanup-doctests-in-ml-clustering.
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This reverts commit 4f9a66481849dc867cf6592d53e0e9782361d20a.
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Author: Kai Jiang <jiangkai@gmail.com>
Closes #10527 from vectorijk/spark-12567.
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for reduce, fold
Clarify that reduce functions need to be commutative, and fold functions do not
See https://github.com/apache/spark/pull/11091
Author: Sean Owen <sowen@cloudera.com>
Closes #11217 from srowen/SPARK-13339.
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There's a small typo in the SparseVector.parse docstring (which says that it returns a DenseVector rather than a SparseVector), which seems to be incorrect.
Author: Miles Yucht <miles@databricks.com>
Closes #11213 from mgyucht/fix-sparsevector-docs.
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This pull request has the following changes:
1. Moved UserDefinedFunction into expressions package. This is more consistent with how we structure the packages for window functions and UDAFs.
2. Moved UserDefinedPythonFunction into execution.python package, so we don't have a random private class in the top level sql package.
3. Move everything in execution/python.scala into the newly created execution.python package.
Most of the diffs are just straight copy-paste.
Author: Reynold Xin <rxin@databricks.com>
Closes #11181 from rxin/SPARK-13296.
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JIRA: https://issues.apache.org/jira/browse/SPARK-12363
This issue is pointed by yanboliang. When `setRuns` is removed from PowerIterationClustering, one of the tests will be failed. I found that some `dstAttr`s of the normalized graph are not correct values but 0.0. By setting `TripletFields.All` in `mapTriplets` it can work.
Author: Liang-Chi Hsieh <viirya@gmail.com>
Author: Xiangrui Meng <meng@databricks.com>
Closes #10539 from viirya/fix-poweriter.
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consistent format
Part of task for [SPARK-11219](https://issues.apache.org/jira/browse/SPARK-11219) to make PySpark MLlib parameter description formatting consistent. This is for the classification module.
Author: vijaykiran <mail@vijaykiran.com>
Author: Bryan Cutler <cutlerb@gmail.com>
Closes #11183 from BryanCutler/pyspark-consistent-param-classification-SPARK-12630.
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PySpark support ```covar_samp``` and ```covar_pop```.
cc rxin davies marmbrus
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #10876 from yanboliang/spark-12962.
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We should have lint rules using sphinx to automatically catch the pydoc issues that are sometimes introduced.
Right now ./dev/lint-python will skip building the docs if sphinx isn't present - but it might make sense to fail hard - just a matter of if we want to insist all PySpark developers have sphinx present.
Author: Holden Karau <holden@us.ibm.com>
Closes #11109 from holdenk/SPARK-13154-add-pydoc-lint-for-docs.
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Add Python API for spark.ml bisecting k-means.
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #10889 from yanboliang/spark-12974.
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parameter
Fix this defect by check default value exist or not.
yanboliang Please help to review.
Author: Tommy YU <tummyyu@163.com>
Closes #11043 from Wenpei/spark-13153-handle-param-withnodefaultvalue.
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Pyspark Params class has a method `hasParam(paramName)` which returns `True` if the class has a parameter by that name, but throws an `AttributeError` otherwise. There is not currently a way of getting a Boolean to indicate if a class has a parameter. With Spark 2.0 we could modify the existing behavior of `hasParam` or add an additional method with this functionality.
In Python:
```python
from pyspark.ml.classification import NaiveBayes
nb = NaiveBayes()
print nb.hasParam("smoothing")
print nb.hasParam("notAParam")
```
produces:
> True
> AttributeError: 'NaiveBayes' object has no attribute 'notAParam'
However, in Scala:
```scala
import org.apache.spark.ml.classification.NaiveBayes
val nb = new NaiveBayes()
nb.hasParam("smoothing")
nb.hasParam("notAParam")
```
produces:
> true
> false
cc holdenk
Author: sethah <seth.hendrickson16@gmail.com>
Closes #10962 from sethah/SPARK-13047.
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PySpark ml.clustering support export/import.
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #10999 from yanboliang/spark-13035.
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Test cases should be removed from annotation of ```setXXX``` function, otherwise it will be parts of [Python API docs](https://spark.apache.org/docs/latest/api/python/pyspark.ml.html#pyspark.ml.clustering.KMeans.setInitMode).
cc mengxr jkbradley
Author: Yanbo Liang <ybliang8@gmail.com>
Closes #10975 from yanboliang/clustering-cleanup.
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PySpark ml.recommendation support export/import.
Author: Kai Jiang <jiangkai@gmail.com>
Closes #11044 from vectorijk/spark-13037.
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Grouping() returns a column is aggregated or not, grouping_id() returns the aggregation levels.
grouping()/grouping_id() could be used with window function, but does not work in having/sort clause, will be fixed by another PR.
The GROUPING__ID/grouping_id() in Hive is wrong (according to docs), we also did it wrongly, this PR change that to match the behavior in most databases (also the docs of Hive).
Author: Davies Liu <davies@databricks.com>
Closes #10677 from davies/grouping.
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I have fixed the warnings by running "make html" under "python/docs/". They are caused by not having blank lines around indented paragraphs.
Author: Nam Pham <phamducnam@gmail.com>
Closes #11025 from nampham2/SPARK-12986.
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structures
rxin srowen
I work out note message for rdd.take function, please help to review.
If it's fine, I can apply to all other function later.
Author: Tommy YU <tummyyu@163.com>
Closes #10874 from Wenpei/spark-5865-add-warning-for-localdatastructure.
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`rpcEnv.awaitTermination()` was not added in #10854 because some Streaming Python tests hung forever.
This patch fixed the hung issue and added rpcEnv.awaitTermination() back to SparkEnv.
Previously, Streaming Kafka Python tests shutdowns the zookeeper server before stopping StreamingContext. Then when stopping StreamingContext, KafkaReceiver may be hung due to https://issues.apache.org/jira/browse/KAFKA-601, hence, some thread of RpcEnv's Dispatcher cannot exit and rpcEnv.awaitTermination is hung.The patch just changed the shutdown order to fix it.
Author: Shixiong Zhu <shixiong@databricks.com>
Closes #11031 from zsxwing/awaitTermination.
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format
Part of task for [SPARK-11219](https://issues.apache.org/jira/browse/SPARK-11219) to make PySpark MLlib parameter description formatting consistent. This is for the clustering module.
Author: Bryan Cutler <cutlerb@gmail.com>
Closes #10610 from BryanCutler/param-desc-consistent-cluster-SPARK-12631.
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This PR adds the ability to specify the ```ignoreNulls``` option to the functions dsl, e.g:
```df.select($"id", last($"value", ignoreNulls = true).over(Window.partitionBy($"id").orderBy($"other"))```
This PR is some where between a bug fix (see the JIRA) and a new feature. I am not sure if we should backport to 1.6.
cc yhuai
Author: Herman van Hovell <hvanhovell@questtec.nl>
Closes #10957 from hvanhovell/SPARK-13049.
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LinearRegression as example
* Implement ```MLWriter/MLWritable/MLReader/MLReadable``` for PySpark.
* Making ```LinearRegression``` to support ```save/load``` as example. After this merged, the work for other transformers/estimators will be easy, then we can list and distribute the tasks to the community.
cc mengxr jkbradley
Author: Yanbo Liang <ybliang8@gmail.com>
Author: Joseph K. Bradley <joseph@databricks.com>
Closes #10469 from yanboliang/spark-11939.
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I tried to add this via `USE_BIG_DECIMAL_FOR_FLOATS` option from Jackson with no success.
Added test for non-complex types. Should I add a test for complex types?
Author: Brandon Bradley <bradleytastic@gmail.com>
Closes #10936 from blbradley/spark-12749.
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