[SPARK-8074] Parquet should throw AnalysisException during setup for data type/name related failures.

Author: Reynold Xin <rxin@databricks.com>

Closes #6608 from rxin/parquet-analysis and squashes the following commits:

b5dc8e2 [Reynold Xin] Code review feedback.
5617cf6 [Reynold Xin] [SPARK-8074] Parquet should throw AnalysisException during setup for data type/name related failures.

[SPARK-8063] [SPARKR] Spark master URL conflict between MASTER env variable and --master command line option.

Author: Sun Rui <rui.sun@intel.com>

Closes #6605 from sun-rui/SPARK-8063 and squashes the following commits:

51ca48b [Sun Rui] [SPARK-8063][SPARKR] Spark master URL conflict between MASTER env variable and --master command line option.

...m History Server

This PR adds a new API that allows the user to download event logs for an application as a zip file. APIs have been added to download all logs for a given application or just for a specific attempt.

This also add an additional method to the ApplicationHistoryProvider to get the raw files, zipped.

Author: Hari Shreedharan <hshreedharan@apache.org>

Closes #5792 from harishreedharan/eventlog-download and squashes the following commits:

221cc26 [Hari Shreedharan] Update docs with new API information.
a131be6 [Hari Shreedharan] Fix style issues.
5528bd8 [Hari Shreedharan] Merge branch 'master' into eventlog-download
6e8156e [Hari Shreedharan] Simplify tests, use Guava stream copy methods.
d8ddede [Hari Shreedharan] Remove unnecessary case in EventLogDownloadResource.
ffffb53 [Hari Shreedharan] Changed interface to use zip stream. Added more tests.
1100b40 [Hari Shreedharan] Ensure that `Path` does not appear in interfaces, by rafactoring interfaces.
5a5f3e2 [Hari Shreedharan] Fix test ordering issue.
0b66948 [Hari Shreedharan] Minor formatting/import fixes.
4fc518c [Hari Shreedharan] Fix rat failures.
a48b91f [Hari Shreedharan] Refactor to make attemptId optional in the API. Also added tests.
0fc1424 [Hari Shreedharan] File download now works for individual attempts and the entire application.
350d7e8 [Hari Shreedharan] Merge remote-tracking branch 'asf/master' into eventlog-download
fd6ab00 [Hari Shreedharan] Fix style issues
32b7662 [Hari Shreedharan] Use UIRoot directly in ApiRootResource. Also, use `Response` class to set headers.
7b362b2 [Hari Shreedharan] Almost working.
3d18ebc [Hari Shreedharan] [WIP] Try getting the event log download to work.

1. range() overloaded in SQLContext.scala
2. range() modified in python sql context.py
3. Tests added accordingly in DataFrameSuite.scala and python sql tests.py

Author: animesh <animesh@apache.spark>

Closes #6609 from animeshbaranawal/SPARK-7980 and squashes the following commits:

935899c [animesh] SPARK-7980:python+scala changes

Author: Patrick Wendell <patrick@databricks.com>

Closes #6328 from pwendell/spark-1.5-update and squashes the following commits:

2f42d02 [Patrick Wendell] A few more excludes
4bebcf0 [Patrick Wendell] Update to RC4
61aaf46 [Patrick Wendell] Using new release candidate
55f1610 [Patrick Wendell] Another exclude
04b4f04 [Patrick Wendell] More issues with transient 1.4 changes
36f549b [Patrick Wendell] [SPARK-7801] [BUILD] Updating versions to SPARK 1.5.0

https://issues.apache.org/jira/browse/SPARK-7973

Author: Yin Huai <yhuai@databricks.com>

Closes #6525 from yhuai/SPARK-7973 and squashes the following commits:

763b821 [Yin Huai] Also change the timeout of "Single command with -e" to 2 minutes.
e598a08 [Yin Huai] Increase the timeout to 3 minutes.

jira: https://issues.apache.org/jira/browse/SPARK-7983

Customers frequently use zero-based indices in their LIBSVM files. No warnings or errors from Spark will be reported during their computation afterwards, and usually it will lead to wired result for many algorithms (like GBDT).

add a quick check.

Author: Yuhao Yang <hhbyyh@gmail.com>

Closes #6538 from hhbyyh/loadSVM and squashes the following commits:

79d9c11 [Yuhao Yang] optimization as respond to comments
4310710 [Yuhao Yang] merge conflict
96460f1 [Yuhao Yang] merge conflict
20a2811 [Yuhao Yang] use require
6e4f8ca [Yuhao Yang] add check for ascending order
9956365 [Yuhao Yang] add ut for 0-based loadlibsvm exception
5bd1f9a [Yuhao Yang] add require for one-based in loadLIBSVM

It seems hard to find a common pattern of checking types in `Expression`. Sometimes we know what input types we need(like `And`, we know we need two booleans), sometimes we just have some rules(like `Add`, we need 2 numeric types which are equal). So I defined a general interface `checkInputDataTypes` in `Expression` which returns a `TypeCheckResult`. `TypeCheckResult` can tell whether this expression passes the type checking or what the type mismatch is.

This PR mainly works on apply input types checking for arithmetic and predicate expressions.

TODO: apply type checking interface to more expressions.

Author: Wenchen Fan <cloud0fan@outlook.com>

Closes #6405 from cloud-fan/6444 and squashes the following commits:

b5ff31b [Wenchen Fan] address comments
b917275 [Wenchen Fan] rebase
39929d9 [Wenchen Fan] add todo
0808fd2 [Wenchen Fan] make constrcutor of TypeCheckResult private
3bee157 [Wenchen Fan] and decimal type coercion rule for binary comparison
8883025 [Wenchen Fan] apply type check interface to CaseWhen
cffb67c [Wenchen Fan] to have resolved call the data type check function
6eaadff [Wenchen Fan] add equal type constraint to EqualTo
3affbd8 [Wenchen Fan] more fixes
654d46a [Wenchen Fan] improve tests
e0a3628 [Wenchen Fan] improve error message
1524ff6 [Wenchen Fan] fix style
69ca3fe [Wenchen Fan] add error message and tests
c71d02c [Wenchen Fan] fix hive tests
6491721 [Wenchen Fan] use value class TypeCheckResult
7ae76b9 [Wenchen Fan] address comments
cb77e4f [Wenchen Fan] Improve error reporting for expression data type mismatch

Author: Reynold Xin <rxin@databricks.com>

Closes #6601 from rxin/python-read-write-test-and-doc and squashes the following commits:

baa8ad5 [Reynold Xin] Code review feedback.
f081d47 [Reynold Xin] More documentation updates.
c9902fa [Reynold Xin] [SPARK-8060] Improve DataFrame Python reader/writer interface doc and testing.

The current checking does version `1.x' is less than `1.4' this will fail if x has greater than 1 digit, since x > 4, however `1.x` < `1.4`

It fails in my system since I have version `1.10` :P

Author: MechCoder <manojkumarsivaraj334@gmail.com>

Closes #6579 from MechCoder/np_ver and squashes the following commits:

15430f8 [MechCoder] fix syntax error
893fb7e [MechCoder] remove equal to
e35f0d4 [MechCoder] minor
e89376c [MechCoder] Better checking
22703dd [MechCoder] [SPARK-8032] Make version checking for NumPy in MLlib more robust

jira: https://issues.apache.org/jira/browse/SPARK-8043

I found some issues during testing the save/load examples in markdown Documents, as a part of 1.4 QA plan

Author: Yuhao Yang <hhbyyh@gmail.com>

Closes #6584 from hhbyyh/naiveDocExample and squashes the following commits:

a01a206 [Yuhao Yang] fix for Gaussian mixture
2fb8b96 [Yuhao Yang] update NaiveBayes and SVM examples in doc

I found this by chance while building spark and think it is better to keep its name consistent with other sub-projects (Spark Project *).

I am not gonna file JIRA as it is a pretty small issue.

Author: WangTaoTheTonic <wangtao111@huawei.com>

Closes #6603 from WangTaoTheTonic/projName and squashes the following commits:

994b3ba [WangTaoTheTonic] make the project name consistent

I searched the Spark codebase for all occurrences of "scalingVector"

CC: mengxr

Author: Joseph K. Bradley <joseph@databricks.com>

Closes #6596 from jkbradley/scalingVec-rename and squashes the following commits:

d3812f8 [Joseph K. Bradley] renamed scalingVector to scalingVec

This patch significantly refactors CatalystTypeConverters to both clean up the code and enable these conversions to work with future Project Tungsten features.

At a high level, I've reorganized the code so that all functions dealing with the same type are grouped together into type-specific subclasses of `CatalystTypeConveter`.  In addition, I've added new methods that allow the Catalyst Row -> Scala Row conversions to access the Catalyst row's fields through type-specific `getTYPE()` methods rather than the generic `get()` / `Row.apply` methods.  This refactoring is a blocker to being able to unit test new operators that I'm developing as part of Project Tungsten, since those operators may output `UnsafeRow` instances which don't support the generic `get()`.

The stricter type usage of types here has uncovered some bugs in other parts of Spark SQL:

- #6217: DescribeCommand is assigned wrong output attributes in SparkStrategies
- #6218: DataFrame.describe() should cast all aggregates to String
- #6400: Use output schema, not relation schema, for data source input conversion

Spark SQL current has undefined behavior for what happens when you try to create a DataFrame from user-specified rows whose values don't match the declared schema.  According to the `createDataFrame()` Scaladoc:

>  It is important to make sure that the structure of every [[Row]] of the provided RDD matches the provided schema. Otherwise, there will be runtime exception.

Given this, it sounds like it's technically not a break of our API contract to fail-fast when the data types don't match. However, there appear to be many cases where we don't fail even though the types don't match. For example, `JavaHashingTFSuite.hasingTF` passes a column of integers values for a "label" column which is supposed to contain floats.  This column isn't actually read or modified as part of query processing, so its actual concrete type doesn't seem to matter. In other cases, there could be situations where we have generic numeric aggregates that tolerate being called with different numeric types than the schema specified, but this can be okay due to numeric conversions.

In the long run, we will probably want to come up with precise semantics for implicit type conversions / widening when converting Java / Scala rows to Catalyst rows.  Until then, though, I think that failing fast with a ClassCastException is a reasonable behavior; this is the approach taken in this patch.  Note that certain optimizations in the inbound conversion functions for primitive types mean that we'll probably preserve the old undefined behavior in a majority of cases.

Author: Josh Rosen <joshrosen@databricks.com>

Closes #6222 from JoshRosen/catalyst-converters-refactoring and squashes the following commits:

740341b [Josh Rosen] Optimize method dispatch for primitive type conversions
befc613 [Josh Rosen] Add tests to document Option-handling behavior.
5989593 [Josh Rosen] Use new SparkFunSuite base in CatalystTypeConvertersSuite
6edf7f8 [Josh Rosen] Re-add convertToScala(), since a Hive test still needs it
3f7b2d8 [Josh Rosen] Initialize converters lazily so that the attributes are resolved first
6ad0ebb [Josh Rosen] Fix JavaHashingTFSuite ClassCastException
677ff27 [Josh Rosen] Fix null handling bug; add tests.
8033d4c [Josh Rosen] Fix serialization error in UserDefinedGenerator.
85bba9d [Josh Rosen] Fix wrong input data in InMemoryColumnarQuerySuite
9c0e4e1 [Josh Rosen] Remove last use of convertToScala().
ae3278d [Josh Rosen] Throw ClassCastException errors during inbound conversions.
7ca7fcb [Josh Rosen] Comments and cleanup
1e87a45 [Josh Rosen] WIP refactoring of CatalystTypeConverters

This is scala example code for both linear and logistic regression. Python and Java versions are to be added.

Author: DB Tsai <dbt@netflix.com>

Closes #6576 from dbtsai/elasticNetExample and squashes the following commits:

e7ca406 [DB Tsai] fix test
6bb6d77 [DB Tsai] fix suite and remove duplicated setMaxIter
136e0dd [DB Tsai] address feedback
1ec29d4 [DB Tsai] fix style
9462f5f [DB Tsai] add example

Author: Ram Sriharsha <rsriharsha@hw11853.local>

Closes #6358 from harsha2010/SPARK-7387 and squashes the following commits:

63efda2 [Ram Sriharsha] more examples for classifier to distinguish mapreduce from spark properly
aeb6bb6 [Ram Sriharsha] Python Style Fix
54a500c [Ram Sriharsha] Merge branch 'master' into SPARK-7387
615e91c [Ram Sriharsha] cleanup
204c4e3 [Ram Sriharsha] Merge branch 'master' into SPARK-7387
7246d35 [Ram Sriharsha] [SPARK-7387][ml][doc] CrossValidator example code in Python

This is a follow-up of PR #6493, which has been reverted in branch-1.4 because it uses Java 7 specific APIs and breaks Java 6 build. This PR replaces those APIs with equivalent Guava ones to ensure Java 6 friendliness.

cc andrewor14 pwendell, this should also be back ported to branch-1.4.

Author: Cheng Lian <lian@databricks.com>

Closes #6547 from liancheng/override-log4j and squashes the following commits:

c900cfd [Cheng Lian] Addresses Shixiong's comment
72da795 [Cheng Lian] Uses Guava API to ensure Java 6 friendliness

The temporary column should be dropped after we get the prediction column. harsha2010

Author: Xiangrui Meng <meng@databricks.com>

Closes #6592 from mengxr/SPARK-8049 and squashes the following commits:

1d89107 [Xiangrui Meng] use SparkFunSuite
6ee70de [Xiangrui Meng] drop tmp col from OneVsRest output

Thanks ogirardot, closes #6580

cc rxin JoshRosen

Author: Davies Liu <davies@databricks.com>

Closes #6590 from davies/when and squashes the following commits:

c0f2069 [Davies Liu] fix Column.when() and otherwise()

[SPARK-8014] [SQL] Avoid premature metadata discovery when writing a HadoopFsRelation with a save mode other than Append

The current code references the schema of the DataFrame to be written before checking save mode. This triggers expensive metadata discovery prematurely. For save mode other than `Append`, this metadata discovery is useless since we either ignore the result (for `Ignore` and `ErrorIfExists`) or delete existing files (for `Overwrite`) later.

This PR fixes this issue by deferring metadata discovery after save mode checking.

Author: Cheng Lian <lian@databricks.com>

Closes #6583 from liancheng/spark-8014 and squashes the following commits:

1aafabd [Cheng Lian] Updates comments
088abaa [Cheng Lian] Avoids schema merging and partition discovery when data schema and partition schema are defined
8fbd93f [Cheng Lian] Fixes SPARK-8014

[SPARK-7985] [ML] [MLlib] [Docs] Remove "fittingParamMap" references. Updating ML Doc "Estimator, Transformer, and Param" examples.

Updating ML Doc's *"Estimator, Transformer, and Param"* example to use `model.extractParamMap` instead of `model.fittingParamMap`, which no longer exists.

mengxr, I believe this addresses (part of) the *update documentation* TODO list item from [PR 5820](https://github.com/apache/spark/pull/5820).

Author: Mike Dusenberry <dusenberrymw@gmail.com>

Closes #6514 from dusenberrymw/Fix_ML_Doc_Estimator_Transformer_Param_Example and squashes the following commits:

6366e1f [Mike Dusenberry] Updating instances of model.extractParamMap to model.parent.extractParamMap, since the Params of the parent Estimator could possibly differ from thos of the Model.
d850e0e [Mike Dusenberry] Removing all references to "fittingParamMap" throughout Spark, since it has been removed.
0480304 [Mike Dusenberry] Updating the ML Doc "Estimator, Transformer, and Param" Java example to use model.extractParamMap() instead of model.fittingParamMap(), which no longer exists.
7d34939 [Mike Dusenberry] Updating ML Doc "Estimator, Transformer, and Param" example to use model.extractParamMap instead of model.fittingParamMap, which no longer exists.

The minimal change would be to disable shading of Guava in the module,
and rely on the transitive dependency from other libraries instead. But
since Guava's use is so localized, I think it's better to just not use
it instead, so I replaced that code and removed all traces of Guava from
the module's build.

Author: Marcelo Vanzin <vanzin@cloudera.com>

Closes #6555 from vanzin/SPARK-8015 and squashes the following commits:

c0ceea8 [Marcelo Vanzin] Add comments about dependency management.
c38228d [Marcelo Vanzin] Add guava dep in test scope.
b7a0349 [Marcelo Vanzin] Add libthrift exclusion.
6e0942d [Marcelo Vanzin] Add comment in pom.
2d79260 [Marcelo Vanzin] [SPARK-8015] [flume] Remove Guava dependency from flume-sink.

Author: Cheng Lian <lian@databricks.com>

Closes #6581 from liancheng/spark-8037 and squashes the following commits:

d08e97b [Cheng Lian] Ignores files whose name starts with dot in HadoopFsRelation

The new test uses CV to compare `maxIter=0` and `maxIter=1`, and validate on the evaluation result. jkbradley

Author: Xiangrui Meng <meng@databricks.com>

Closes #6572 from mengxr/SPARK-7432 and squashes the following commits:

c236bb8 [Xiangrui Meng] fix flacky cv doctest

add schema()/format()/options() for reader,  add mode()/format()/options()/partitionBy() for writer

cc rxin yhuai  pwendell

Author: Davies Liu <davies@databricks.com>

Closes #6578 from davies/readwrite and squashes the following commits:

720d293 [Davies Liu] address comments
b65dfa2 [Davies Liu] Update readwriter.py
1299ab6 [Davies Liu] make Python API consistent with Scala

[SPARK-8023][SQL] Add "deterministic" attribute to Expression to avoid collapsing nondeterministic projects.

This closes #6570.

Author: Yin Huai <yhuai@databricks.com>
Author: Reynold Xin <rxin@databricks.com>

Closes #6573 from rxin/deterministic and squashes the following commits:

356cd22 [Reynold Xin] Added unit test for the optimizer.
da3fde1 [Reynold Xin] Merge pull request #6570 from yhuai/SPARK-8023
da56200 [Yin Huai] Comments.
e38f264 [Yin Huai] Comment.
f9d6a73 [Yin Huai] Add a deterministic method to Expression.

[SPARK-8020] [SQL] Spark SQL conf in spark-defaults.conf make metadataHive get constructed too early

https://issues.apache.org/jira/browse/SPARK-8020

Author: Yin Huai <yhuai@databricks.com>

Closes #6571 from yhuai/SPARK-8020-1 and squashes the following commits:

0398f5b [Yin Huai] First populate the SQLConf and then construct executionHive and metadataHive.

cc yhuai

Author: Davies Liu <davies@databricks.com>

Closes #6558 from davies/decimalType and squashes the following commits:

c877ca8 [Davies Liu] Update ParquetConverter.scala
48cc57c [Davies Liu] Update ParquetConverter.scala
b43845c [Davies Liu] add test
3b4a94f [Davies Liu] DecimalType is not read back when non-native type exists

This PR adds a Java unit test and user guide for `StringIndexer`. I put it before `OneHotEncoder` because they are closely related. jkbradley

Author: Xiangrui Meng <meng@databricks.com>

Closes #6561 from mengxr/SPARK-7582 and squashes the following commits:

4bba4f1 [Xiangrui Meng] fix example
ba1cd1b [Xiangrui Meng] fix style
7fa18d1 [Xiangrui Meng] add user guide for StringIndexer
136cb93 [Xiangrui Meng] add a Java unit test for StringIndexer

[SPARK-7965] [SPARK-7972] [SQL] Handle expressions containing multiple window expressions and make parser match window frames in case insensitive way

JIRAs:
https://issues.apache.org/jira/browse/SPARK-7965
https://issues.apache.org/jira/browse/SPARK-7972

Author: Yin Huai <yhuai@databricks.com>

Closes #6524 from yhuai/7965-7972 and squashes the following commits:

c12c79c [Yin Huai] Add doc for returned value.
de64328 [Yin Huai] Address rxin's comments.
fc9b1ad [Yin Huai] wip
2996da4 [Yin Huai] scala style
20b65b7 [Yin Huai] Handle expressions containing multiple window expressions.
9568b21 [Yin Huai] case insensitive matches
41f633d [Yin Huai] Failed test case.

Scala `deprecated` annotation actually doesn't show up in JavaDoc.

Author: zsxwing <zsxwing@gmail.com>

Closes #6564 from zsxwing/SPARK-8025 and squashes the following commits:

2faa2bb [zsxwing] Add JavaDoc style deprecation for deprecated Streaming methods

This reverts commit 91f6be87.

https://issues.apache.org/jira/browse/SPARK-8020

Author: Yin Huai <yhuai@databricks.com>

Closes #6563 from yhuai/SPARK-8020 and squashes the following commits:

4e5addc [Yin Huai] style
bf766c6 [Yin Huai] Failed test.
0398f5b [Yin Huai] First populate the SQLConf and then construct executionHive and metadataHive.

Author: Reynold Xin <rxin@databricks.com>

Closes #6569 from rxin/freqItemsWarning and squashes the following commits:

7eec145 [Reynold Xin] [minor doc] Add exploratory data analysis warning for DataFrame.stat.freqItem API.

Also use that profile in create-release.sh

cc pwendell -- Note that this means that we need `knitr` and `roxygen` installed on the machines used for building the release. Let me know if you need help with that.

Author: Shivaram Venkataraman <shivaram@cs.berkeley.edu>

Closes #6567 from shivaram/SPARK-8027 and squashes the following commits:

8dc8ecf [Shivaram Venkataraman] Add maven profile to build R package docs Also use that profile in create-release.sh

Author: Reynold Xin <rxin@databricks.com>

Closes #6565 from rxin/alias and squashes the following commits:

286d880 [Reynold Xin] [SPARK-8026][SQL] Add Column.alias to Scala/Java DataFrame API

Author: Reynold Xin <rxin@databricks.com>

Closes #6566 from rxin/crosstab and squashes the following commits:

e0ace1c [Reynold Xin] [SPARK-7982][SQL] DataFrame.stat.crosstab should use 0 instead of null for pairs that don't appear

This prevents the spark.jars from being cleared while using `--packages` or `--jars`

cc pwendell davies brkyvz

Author: Shivaram Venkataraman <shivaram@cs.berkeley.edu>

Closes #6568 from shivaram/SPARK-8028 and squashes the following commits:

3a9cf1f [Shivaram Venkataraman] Use addJar instead of setJars in SparkR This prevents the spark.jars from being cleared

Currently if a bad log type if specified, then we get blank.
We should provide a more informative error message.