[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-22 Thread HyukjinKwon
Github user HyukjinKwon commented on the issue:

https://github.com/apache/spark/pull/19370
  
Seems there is a conflict while backporting to branch-2.2. @jsnowacki, mind 
opening a backporting PR to branch-2.2 please?

I think this is important for many Windows users and I guess relatively 
low-risky.


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-22 Thread HyukjinKwon
Github user HyukjinKwon commented on the issue:

https://github.com/apache/spark/pull/19370
  
Merged to master.


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-22 Thread HyukjinKwon
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https://github.com/apache/spark/pull/19370
  
Build started: [SparkR] `ALL` 
[![PR-19370](https://ci.appveyor.com/api/projects/status/github/spark-test/spark?branch=A5AAFE0C-D09F-4FBE-B834-811E8AC9FF06=true)](https://ci.appveyor.com/project/spark-test/spark/branch/A5AAFE0C-D09F-4FBE-B834-811E8AC9FF06)
Diff: 
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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-22 Thread jsnowacki
Github user jsnowacki commented on the issue:

https://github.com/apache/spark/pull/19370
  
Thanks for looking into it again. I've followed your suggestions and 
updated PR. It also seems to work for me now.


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-21 Thread HyukjinKwon
Github user HyukjinKwon commented on the issue:

https://github.com/apache/spark/pull/19370
  
In `if not exist "%FIND_SPARK_HOME_PYTHON_SCRIPT%" (`, I switched the 
condition to be matched with 
https://github.com/apache/spark/blob/a36a76ac43c36a3b897a748bd9f138b629dbc684/bin/find-spark-home#L27


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-21 Thread HyukjinKwon
Github user HyukjinKwon commented on the issue:

https://github.com/apache/spark/pull/19370
  
I suggest this:

```cmd
rem Path to Python script finding SPARK_HOME
set FIND_SPARK_HOME_PYTHON_SCRIPT=%~dp0find_spark_home.py

rem Default to standard python interpreter unless told otherwise
set PYTHON_RUNNER=python
rem If PYSPARK_DRIVER_PYTHON is set, it overwrites the python version
if not "x%PYSPARK_DRIVER_PYTHON%" =="x" (
  set PYTHON_RUNNER=%PYSPARK_DRIVER_PYTHON%
)
rem If PYSPARK_PYTHON is set, it overwrites the python version
if not "x%PYSPARK_PYTHON%" =="x" (
  set PYTHON_RUNNER=%PYSPARK_PYTHON%
)

rem If there is python installed, trying to use the root dir as SPARK_HOME
where %PYTHON_RUNNER% > nul 2>$1
if %ERRORLEVEL% neq 0 (
  if not exist %PYTHON_RUNNER% (
echo Missing Python executable '%PYTHON_RUNNER%', defaulting to 
'%~dp0..' for SPARK_HOME. ^
Please install Python or specify the correct Python executable for 
PYSPARK_DRIVER_PYTHON ^
or PYSPARK_PYTHON.
if "x%SPARK_HOME%"=="x" (
  set SPARK_HOME=%~dp0..
)
  )
)

rem Only attempt to find SPARK_HOME if it is not set.
if "x%SPARK_HOME%"=="x" (
  rem We are pip installed, use the Python script to resolve a reasonable 
SPARK_HOME
  if not exist "%FIND_SPARK_HOME_PYTHON_SCRIPT%" (
rem If we are not in the same directory as find_spark_home.py we are 
not pip installed so we don't
rem need to search the different Python directories for a Spark 
installation.
rem Note only that, if the user has pip installed PySpark but is 
directly calling pyspark-shell or
rem spark-submit in another directory we want to use that version of 
PySpark rather than the
rem pip installed version of PySpark.
set SPARK_HOME=%~dp0..
  ) else (
rem If there is no python installed it will fail with message:
rem 'python' is not recognized as an internal or external command,
for /f "delims=" %%i in ('%PYTHON_RUNNER% 
%FIND_SPARK_HOME_PYTHON_SCRIPT%') do set SPARK_HOME=%%i
  )
)
```

I manually tested each branch. This address the concern in 
https://github.com/apache/spark/pull/19370#discussion_r152449365. The error 
message shows like:

```cmd
C:\...>pyspark
```
```
Missing Python executable 'C:\foo\bar.exe', defaulting to 
'C:\Python27\Scripts\.
.' for SPARK_HOME. Please install Python or specify the correct Python 
executabl
e for PYSPARK_DRIVER_PYTHON or PYSPARK_PYTHON.
```
```cmd
C:\...>pyspark
```
```
Missing Python executable 'bar', defaulting to 'C:\Python27\Scripts\..' for 
SPAR
K_HOME. Please install Python or specify the correct Python executable for 
PYSPA
RK_DRIVER_PYTHON or PYSPARK_PYTHON.
```


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-20 Thread jsnowacki
Github user jsnowacki commented on the issue:

https://github.com/apache/spark/pull/19370
  
I've added this check using `where`; it is at least some protection against 
missing python with some more meaningful information returned.


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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-19 Thread felixcheung
Github user felixcheung commented on the issue:

https://github.com/apache/spark/pull/19370
  
I think the concern is we are adding python dependency for even non python 
use cases.

We could track handling missing python better separately. My concerns is 
python is not a standard component on Windows and the user might not have it 
installed for using spark-submit or spark-shell. And the message might not be 
obvious as to why.




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[GitHub] spark issue #19370: [SPARK-22495] Fix setup of SPARK_HOME variable on Window...

2017-11-19 Thread HyukjinKwon
Github user HyukjinKwon commented on the issue:

https://github.com/apache/spark/pull/19370
  
Yup, +1 for going ahead with branch-2.2.


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2017-11-18 Thread HyukjinKwon
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Will take a final look tomorrow.


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2017-11-13 Thread jsnowacki
Github user jsnowacki commented on the issue:

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I've corrected the code with the above comments and linked this PR to 
[SPARK-22495](https://issues.apache.org/jira/browse/SPARK-22495). The only 
thing I could think of regarding solving the variants of the python runner is 
given above. The way how CMD solves and overwrites the python correctly is this 
in-line check approach, which is less elegant that Bash one, but works most 
reliably for CMD. 


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Github user SparkQA commented on the issue:

https://github.com/apache/spark/pull/19370
  
**[Test build #83806 has 
started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/83806/testReport)**
 for PR 19370 at commit 
[`95037e5`](https://github.com/apache/spark/commit/95037e58d6ff45601abfbd5602232a4d63ff8f8e).


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