[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-05-05 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-217100315
  
@liancheng Hi Lian, in this PR, i had implemented "describe table 
partition" and "describe column". 
Do you want me to put this on top of your describe table changes ? Let me 
know please. If you plan to work on it then let me know.

@viirya - fyi.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-05-04 Thread dilipbiswal
Github user dilipbiswal closed the pull request at:

https://github.com/apache/spark/pull/12460


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-05-04 Thread srowen
Github user srowen commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-216893487
  
It looks like this can be closed because 
https://github.com/apache/spark/pull/12844 was merged


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-29 Thread AmplabJenkins
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-29 Thread SparkQA
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https://github.com/apache/spark/pull/12460#issuecomment-215939319
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-29 Thread SparkQA
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https://github.com/apache/spark/pull/12460#issuecomment-215931419
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-27 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-215195961
  
@liancheng Thank you for your comment. Actually initially i started with 
the idea of serving the describe  command solely from `CatalogTable`. I then 
realized that `CatalogTable` may not have all the metadata information that is 
required for this command. So i have a couple of high level questions:

1. Can we add more fields to CatalogTable ? 
 * Some example of fields that miss are retention, privileges. 
 * When we choose "describe extended partition", quite a few details that 
are readily available in HivePartition is not present in our 
CatalogTablePartition object. 
 * Another use case is "describe table column_path". This is served by a 
call to Hive's deserializer via. Hive.getFieldsFromDeserializer
2. Do we have flexibility on the output of describe command or we need 
match hive's output completely ? If so, we can remove the describe-related 
tests from `HiveCompatibiltySuite` and add suitable tests in `SQLQuerySuite`.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-27 Thread liancheng
Github user liancheng commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-215115938
  
@dilipbiswal One purpose of re-implementing all DDL as native Spark SQL 
command is to minimize dependency to Hive so that we can move Hive into a 
separate data source some day. That said, we really don't want to make these 
new DDL commands rely on classes like `HiveClient`, `HiveClientImpl`, or 
`HiveSessionCatalog`. When you need to access Hive table metadata, you should 
access them via `CatalogTable` rather than depending on any Hive data structure.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-27 Thread SparkQA
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https://github.com/apache/spark/pull/12460#issuecomment-215033667
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-26 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-214852703
  
@liancheng Hi Lian, can you please look over this PR and give some 
comments. Thanks !!


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-212557057
  
rebased..


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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https://github.com/apache/spark/pull/12460#issuecomment-212335624
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

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https://github.com/apache/spark/pull/12460#issuecomment-212335619
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread SparkQA
Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-212335071
  
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 * This patch **fails Spark unit tests**.
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread SparkQA
Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-212297857
  
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread dilipbiswal
Github user dilipbiswal commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60357946
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

@hvanhovell Yeah. I have attempted to support the key/value/elem keywords. 
Could you please check to see if there are any issues ? I am also trying to 
test this a bit more in parallel.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread SparkQA
Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-212287159
  
**[Test build #56333 has 
started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/56333/consoleFull)**
 for PR 12460 at commit 
[`98df1d8`](https://github.com/apache/spark/commit/98df1d89e91506abeb32c0707db061cb3538588e).


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-20 Thread hvanhovell
Github user hvanhovell commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60354533
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

@dilipbiswal Do you plan on supporting the key/value/elem keywords and 
nested elements? Which would be cool.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-19 Thread dilipbiswal
Github user dilipbiswal commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60347793
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

@hvanhovell  Let me work on the grammar change. I will introduce a rule 
colPathIdentifier which is basically a regular identifier or the set of key, 
value, elem keywords. 


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-19 Thread dilipbiswal
Github user dilipbiswal commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60335414
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

@hvanhovell Hi Herman, I tried very simple scenarios of using nested 
columns and it seems to work ok. Let me paste the output here.
map

``` SQL
create table mp_t1 (a map , b string) row format delimited 
collection items terminated by '$' map keys terminated by '#';
load data local inpath '/data/mapfile' overwrite into table mp_t1; 
select * from mp_t1;
a b
{100:"spark"}   ABC

describe extended mp_t1.a.$key$;
Result
==
$key$   int from deserializer
```
Struct

``` SQL
create table ct_t (a struct, b string) stored as 
textfile; 
insert into ct_t values (('abc', 'efg'), 'ABC'); 
spark-sql> select * from ct_t;
{"n1":"abb","n2":"efg"} ABC

spark-sql> describe extended ct_t.a.n1;
OK
n1  string  from deserializer  
```

Herman,  based on hive syntax diagram, i was expecting the following 
command to work.
describe extended mp_t1.a.'$key$';
However, i get a parse exception and when i remove the quotes it works like 
following.
describe extended mp_t1.a.$key$

Given this, we can simply change the grammar to use a dot separated list of 
identifiers, right ? Please
let me know what you think..


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-19 Thread hvanhovell
Github user hvanhovell commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60186589
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

Ok, lets remove this from the grammar as well, and just use a dot separated 
list of identifiers. Actually, are we currently able to deal with nested 
columns?


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-19 Thread dilipbiswal
Github user dilipbiswal commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60180497
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

Yeah Herman. Not supporting it would certainly simplify things. FYI -  I 
checked that the unit test case describe_xpath.q which exercises this syntax is 
not getting tested in HiveCompatibleSuite. 


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-18 Thread hvanhovell
Github user hvanhovell commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60175987
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

It is a bit more complicates than I thought. We allow strings here because 
Hive allows us to use the `'$elem'`, `'$keys'` and `'$values'` 'keywords'. That 
is why I added strings to the rule. I am not sure if we should support this. 
What do you guys think?

This is what I found in the Hive manual:
```SQL
DESCRIBE [EXTENDED|FORMATTED]  [db_name.]table_name[ col_name ( 
[.field_name] | [.'$elem$'] | [.'$key$'] | [.'$value$'] )* ];
```

See also: 
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Describe


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-18 Thread AmplabJenkins
Github user AmplabJenkins commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211543186
  
Test PASSed.
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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-18 Thread AmplabJenkins
Github user AmplabJenkins commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211543181
  
Merged build finished. Test PASSed.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-18 Thread SparkQA
Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211542850
  
**[Test build #56071 has 
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/56071/consoleFull)**
 for PR 12460 at commit 
[`cfb0eeb`](https://github.com/apache/spark/commit/cfb0eeb71a136865154772b2e285b9918d5c9a30).
 * This patch passes all tests.
 * This patch merges cleanly.
 * This patch adds no public classes.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-18 Thread SparkQA
Github user SparkQA commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211487455
  
**[Test build #56071 has 
started](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/56071/consoleFull)**
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[`cfb0eeb`](https://github.com/apache/spark/commit/cfb0eeb71a136865154772b2e285b9918d5c9a30).


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-17 Thread gatorsmile
Github user gatorsmile commented on a diff in the pull request:

https://github.com/apache/spark/pull/12460#discussion_r60006341
  
--- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/SparkSqlParser.scala ---
@@ -254,6 +251,21 @@ class SparkSqlAstBuilder extends AstBuilder {
 }
   }
 
+   /**
+* A column path can be specified as an parameter to describe command. 
It is a dot separated
+* elements where the last element can be a String.
+* TODO - check with Herman
--- End diff --

cc @hvanhovell 


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-17 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211169665
  
@gatorsmile Thank you. I have resolved the conflicts.


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-17 Thread gatorsmile
Github user gatorsmile commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211163664
  
Please resolve the conflicts. : )


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[GitHub] spark pull request: [SPARK-14127][SQL][WIP] Describe table

2016-04-17 Thread dilipbiswal
Github user dilipbiswal commented on the pull request:

https://github.com/apache/spark/pull/12460#issuecomment-211163482
  
@andrewor14  Looking for some early feedback on this as i was thinking to 
do the same for show table extended. I did have a brief discussion with 
@gatorsmile on this. 


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