[2/2] zeppelin git commit: ZEPPELIN-2898. Support Yarn-Cluster for Spark Interpreter

2017-09-18 Thread zjffdu 
ZEPPELIN-2898. Support Yarn-Cluster for Spark Interpreter

### What is this PR for?
This is the first version for supporting yarn-cluster of `SparkInterpreter`.   
I just delegate all the function to `spark-submit` as yarn-cluster is natively 
supported by spark, we don't need to reinvent the wheel. But there's still 
improvement to be done in future, e.g. I put some spark specific logic in 
`InterpreterSetting` which is not a good practise.  I plan to improve it when I 
refactor the `Interpreter` class (ZEPPELIN-2685).

Besides that, I also add `MiniHadoopCluster` & `MiniZeppelin` which help for 
the integration test of yarn-client & yarn-cluster mode, otherwise I have to 
manually verify yarn-client & yarn-cluster mode which would easily cause 
regression issue in future.

To be noticed:

* SPARK_HOME must be specified for yarn-cluster mode
* HADOOP_CONF_DIR must be specified for yarn-cluster mode

### What type of PR is it?
[Feature]

### Todos
* [ ] - Task

### What is the Jira issue?
https://github.com/zjffdu/zeppelin/tree/ZEPPELIN-2898

### How should this be tested?
System test is added in `SparkInterpreterIT`.

### Questions:
* Does the licenses files need update?  No
* Is there breaking changes for older versions? No
* Does this needs documentation? No

Author: Jeff Zhang 

Closes #2577 from zjffdu/ZEPPELIN-2898 and squashes the following commits:

9da7c4b [Jeff Zhang] ZEPPELIN-2898. Support Yarn-Cluster for Spark Interpreter


Project: http://git-wip-us.apache.org/repos/asf/zeppelin/repo
Commit: http://git-wip-us.apache.org/repos/asf/zeppelin/commit/5d715109
Tree: http://git-wip-us.apache.org/repos/asf/zeppelin/tree/5d715109
Diff: http://git-wip-us.apache.org/repos/asf/zeppelin/diff/5d715109

Branch: refs/heads/master
Commit: 5d7151097e171c5ec9f22f150ac4ce92b5512013
Parents: d25639c
Author: Jeff Zhang 
Authored: Mon Sep 4 21:54:56 2017 +0800
Committer: Jeff Zhang 
Committed: Tue Sep 19 06:40:51 2017 +0800

--
 .travis.yml |   4 +-
 bin/common.sh   |   6 +-
 bin/interpreter.sh  |  12 +-
 conf/log4j_yarn_cluster.properties  |  23 ++
 docs/interpreter/spark.md   |   2 +-
 .../zeppelin/python/IPythonInterpreter.java |  44 +--
 .../zeppelin/spark/IPySparkInterpreter.java |  11 +-
 .../zeppelin/spark/PySparkInterpreter.java  |  22 +-
 .../org/apache/zeppelin/spark/PythonUtils.java  |  96 +++
 .../apache/zeppelin/spark/SparkInterpreter.java |  99 +--
 .../src/main/resources/interpreter-setting.json |   4 +-
 .../zeppelin/spark/IPySparkInterpreterTest.java |   1 +
 .../spark/PySparkInterpreterMatplotlibTest.java |   2 +-
 .../zeppelin/spark/PySparkInterpreterTest.java  |   2 +-
 .../interpreter/InterpreterContext.java |  47 ++-
 zeppelin-server/pom.xml |  12 +
 .../zeppelin/integration/AuthenticationIT.java  |   2 +-
 .../integration/InterpreterModeActionsIT.java   |   2 +-
 .../integration/PersonalizeActionsIT.java   |   2 +-
 .../zeppelin/rest/AbstractTestRestApi.java  |   8 +-
 zeppelin-zengine/pom.xml| 286 ++-
 .../zeppelin/conf/ZeppelinConfiguration.java|   2 +-
 .../interpreter/InterpreterSetting.java | 131 -
 .../interpreter/InterpreterSettingManager.java  |  15 +-
 .../remote/RemoteInterpreterEventPoller.java|   6 +-
 .../remote/RemoteInterpreterManagedProcess.java |   2 +
 .../remote/RemoteInterpreterProcess.java|   2 +-
 .../interpreter/AbstractInterpreterTest.java|  23 +-
 .../zeppelin/interpreter/MiniHadoopCluster.java | 114 
 .../zeppelin/interpreter/MiniZeppelin.java  |  68 +
 .../interpreter/SparkInterpreterModeTest.java   | 147 ++
 .../notebook/repo/VFSNotebookRepoTest.java  |   4 +-
 32 files changed, 1007 insertions(+), 194 deletions(-)
--


http://git-wip-us.apache.org/repos/asf/zeppelin/blob/5d715109/.travis.yml
--
diff --git a/.travis.yml b/.travis.yml
index 0d9e72a..4495aa4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -66,7 +66,8 @@ matrix:
 # Several tests were excluded from this configuration due to the following 
issues:
 # HeliumApplicationFactoryTest - 
https://issues.apache.org/jira/browse/ZEPPELIN-2470
 # After issues are fixed these tests need to be included back by removing 
them from the "-Dtests.to.exclude" property
-- jdk: "oraclejdk8"
+- sudo: required
+  jdk: "oraclejdk8"
   dist: precise
   env: PYTHON="3" SCALA_VER="2.11" SPARK_VER="2.2.0" HADOOP_VER="2.6" 
PROFILE="-Pspark-2.2 -Pweb-ci -Pscalding -Phelium-dev -Pexamples -Pscala-2.11" 
BUILD_FLAG="package -Pbuild-distr -DskipRat"

[1/2] zeppelin git commit: ZEPPELIN-2898. Support Yarn-Cluster for Spark Interpreter

2017-09-18 Thread zjffdu 
Repository: zeppelin
Updated Branches:
  refs/heads/master d25639caa -> 5d7151097


http://git-wip-us.apache.org/repos/asf/zeppelin/blob/5d715109/zeppelin-zengine/src/test/java/org/apache/zeppelin/notebook/repo/VFSNotebookRepoTest.java
--
diff --git 
a/zeppelin-zengine/src/test/java/org/apache/zeppelin/notebook/repo/VFSNotebookRepoTest.java
 
b/zeppelin-zengine/src/test/java/org/apache/zeppelin/notebook/repo/VFSNotebookRepoTest.java
index 98a08d9..d62c308 100644
--- 
a/zeppelin-zengine/src/test/java/org/apache/zeppelin/notebook/repo/VFSNotebookRepoTest.java
+++ 
b/zeppelin-zengine/src/test/java/org/apache/zeppelin/notebook/repo/VFSNotebookRepoTest.java
@@ -73,9 +73,7 @@ public class VFSNotebookRepoTest extends 
AbstractInterpreterTest implements JobL
 
   @After
   public void tearDown() throws Exception {
-if (!FileUtils.deleteQuietly(testRootDir)) {
-  LOG.error("Failed to delete {} ", testRootDir.getName());
-}
+super.tearDown();
   }
 
   @Test

svn commit: r21649 - /dev/zeppelin/zeppelin-0.7.3-rc5/

2017-09-18 Thread minalee 
Author: minalee
Date: Mon Sep 18 15:02:17 2017
New Revision: 21649

Log:
Upload zeppelin-0.7.3-rc5

Added:
dev/zeppelin/zeppelin-0.7.3-rc5/
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dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz   (with 
props)
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Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz
==
Binary file - no diff available.

Propchange: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz
--
svn:mime-type = application/octet-stream

Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.asc
==
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+++ dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.asc Mon Sep 18 
15:02:17 2017
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Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.md5
==
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+++ dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.md5 Mon Sep 18 
15:02:17 2017
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Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.sha512
==
--- dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.sha512 (added)
+++ dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-all.tgz.sha512 Mon Sep 
18 15:02:17 2017
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  zeppelin-0.7.3-bin-all.tgz

Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz
==
Binary file - no diff available.

Propchange: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz
--
svn:mime-type = application/octet-stream

Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.asc
==
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+++ dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.asc Mon Sep 
18 15:02:17 2017
@@ -0,0 +1,11 @@
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Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.md5
==
--- dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.md5 (added)
+++ dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.md5 Mon Sep 
18 15:02:17 2017
@@ -0,0 +1 @@
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BD

Added: dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.sha512
==
--- dev/zeppelin/zeppelin-0.7.3-rc5/zeppelin-0.7.3-bin-netinst.tgz.sha512 
(added)
+++

[1/2] zeppelin git commit: Preparing Apache Zeppelin release 0.7.3

2017-09-18 Thread minalee 
Repository: zeppelin
Updated Branches:
  refs/heads/branch-0.7 abdf3352e -> 8a2b46a25


Preparing Apache Zeppelin release 0.7.3


Project: http://git-wip-us.apache.org/repos/asf/zeppelin/repo
Commit: http://git-wip-us.apache.org/repos/asf/zeppelin/commit/5d246c96
Tree: http://git-wip-us.apache.org/repos/asf/zeppelin/tree/5d246c96
Diff: http://git-wip-us.apache.org/repos/asf/zeppelin/diff/5d246c96

Branch: refs/heads/branch-0.7
Commit: 5d246c96b054dcb8854e2beb924fc2c89b767fc1
Parents: abdf335
Author: Mina Lee 
Authored: Mon Sep 18 16:02:51 2017 +0200
Committer: Mina Lee 
Committed: Mon Sep 18 16:02:51 2017 +0200

--
 alluxio/pom.xml  | 4 ++--
 angular/pom.xml  | 4 ++--
 beam/pom.xml | 4 ++--
 bigquery/pom.xml | 4 ++--
 cassandra/pom.xml| 4 ++--
 elasticsearch/pom.xml| 4 ++--
 file/pom.xml | 4 ++--
 flink/pom.xml| 4 ++--
 geode/pom.xml| 4 ++--
 hbase/pom.xml| 4 ++--
 helium-dev/pom.xml   | 4 ++--
 ignite/pom.xml   | 4 ++--
 jdbc/pom.xml | 4 ++--
 kylin/pom.xml| 4 ++--
 lens/pom.xml | 4 ++--
 livy/pom.xml | 4 ++--
 markdown/pom.xml | 4 ++--
 pig/pom.xml  | 4 ++--
 pom.xml  | 2 +-
 postgresql/pom.xml   | 4 ++--
 python/pom.xml   | 4 ++--
 r/pom.xml| 2 +-
 scalding/pom.xml | 4 ++--
 scio/pom.xml | 4 ++--
 scripts/docker/zeppelin/bin/Dockerfile   | 2 +-
 shell/pom.xml| 4 ++--
 spark-dependencies/pom.xml   | 4 ++--
 spark/pom.xml| 4 ++--
 zeppelin-display/pom.xml | 4 ++--
 zeppelin-distribution/pom.xml| 2 +-
 zeppelin-examples/pom.xml| 4 ++--
 zeppelin-examples/zeppelin-example-clock/pom.xml | 4 ++--
 .../zeppelin-example-clock/zeppelin-example-clock.json   | 2 +-
 zeppelin-examples/zeppelin-example-horizontalbar/pom.xml | 4 ++--
 zeppelin-interpreter/pom.xml | 4 ++--
 zeppelin-server/pom.xml  | 4 ++--
 zeppelin-web/pom.xml | 4 ++--
 zeppelin-web/src/app/tabledata/package.json  | 2 +-
 zeppelin-web/src/app/visualization/package.json  | 2 +-
 zeppelin-zengine/pom.xml | 4 ++--
 40 files changed, 73 insertions(+), 73 deletions(-)
--


http://git-wip-us.apache.org/repos/asf/zeppelin/blob/5d246c96/alluxio/pom.xml
--
diff --git a/alluxio/pom.xml b/alluxio/pom.xml
index 802ce40..b3206ed 100644
--- a/alluxio/pom.xml
+++ b/alluxio/pom.xml
@@ -22,14 +22,14 @@
 
 zeppelin
 org.apache.zeppelin
-0.7.4-SNAPSHOT
+0.7.3
 ..
 
 
 org.apache.zeppelin
 zeppelin-alluxio
 jar
-0.7.4-SNAPSHOT
+0.7.3
 Zeppelin: Alluxio interpreter
 
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/5d246c96/angular/pom.xml
--
diff --git a/angular/pom.xml b/angular/pom.xml
index 1c83fe4..5701eac 100644
--- a/angular/pom.xml
+++ b/angular/pom.xml
@@ -22,14 +22,14 @@
   
 zeppelin
 org.apache.zeppelin
-0.7.4-SNAPSHOT
+0.7.3
 ..
   
 
   org.apache.zeppelin
   zeppelin-angular
   jar
-  0.7.4-SNAPSHOT
+  0.7.3
   Zeppelin: Angular interpreter
 
   

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/5d246c96/beam/pom.xml

[2/2] zeppelin git commit: Preparing development version 0.7.4-SNAPSHOT

2017-09-18 Thread minalee 
Preparing development version 0.7.4-SNAPSHOT


Project: http://git-wip-us.apache.org/repos/asf/zeppelin/repo
Commit: http://git-wip-us.apache.org/repos/asf/zeppelin/commit/8a2b46a2
Tree: http://git-wip-us.apache.org/repos/asf/zeppelin/tree/8a2b46a2
Diff: http://git-wip-us.apache.org/repos/asf/zeppelin/diff/8a2b46a2

Branch: refs/heads/branch-0.7
Commit: 8a2b46a25bb3b50133e50d64248e2bc273446046
Parents: 5d246c9
Author: Mina Lee 
Authored: Mon Sep 18 16:02:57 2017 +0200
Committer: Mina Lee 
Committed: Mon Sep 18 16:02:57 2017 +0200

--
 alluxio/pom.xml  | 4 ++--
 angular/pom.xml  | 4 ++--
 beam/pom.xml | 4 ++--
 bigquery/pom.xml | 4 ++--
 cassandra/pom.xml| 4 ++--
 elasticsearch/pom.xml| 4 ++--
 file/pom.xml | 4 ++--
 flink/pom.xml| 4 ++--
 geode/pom.xml| 4 ++--
 hbase/pom.xml| 4 ++--
 helium-dev/pom.xml   | 4 ++--
 ignite/pom.xml   | 4 ++--
 jdbc/pom.xml | 4 ++--
 kylin/pom.xml| 4 ++--
 lens/pom.xml | 4 ++--
 livy/pom.xml | 4 ++--
 markdown/pom.xml | 4 ++--
 pig/pom.xml  | 4 ++--
 pom.xml  | 2 +-
 postgresql/pom.xml   | 4 ++--
 python/pom.xml   | 4 ++--
 r/pom.xml| 2 +-
 scalding/pom.xml | 4 ++--
 scio/pom.xml | 4 ++--
 scripts/docker/zeppelin/bin/Dockerfile   | 2 +-
 shell/pom.xml| 4 ++--
 spark-dependencies/pom.xml   | 4 ++--
 spark/pom.xml| 4 ++--
 zeppelin-display/pom.xml | 4 ++--
 zeppelin-distribution/pom.xml| 2 +-
 zeppelin-examples/pom.xml| 4 ++--
 zeppelin-examples/zeppelin-example-clock/pom.xml | 4 ++--
 .../zeppelin-example-clock/zeppelin-example-clock.json   | 2 +-
 zeppelin-examples/zeppelin-example-horizontalbar/pom.xml | 4 ++--
 zeppelin-interpreter/pom.xml | 4 ++--
 zeppelin-server/pom.xml  | 4 ++--
 zeppelin-web/pom.xml | 4 ++--
 zeppelin-web/src/app/tabledata/package.json  | 2 +-
 zeppelin-web/src/app/visualization/package.json  | 2 +-
 zeppelin-zengine/pom.xml | 4 ++--
 40 files changed, 73 insertions(+), 73 deletions(-)
--


http://git-wip-us.apache.org/repos/asf/zeppelin/blob/8a2b46a2/alluxio/pom.xml
--
diff --git a/alluxio/pom.xml b/alluxio/pom.xml
index b3206ed..802ce40 100644
--- a/alluxio/pom.xml
+++ b/alluxio/pom.xml
@@ -22,14 +22,14 @@
 
 zeppelin
 org.apache.zeppelin
-0.7.3
+0.7.4-SNAPSHOT
 ..
 
 
 org.apache.zeppelin
 zeppelin-alluxio
 jar
-0.7.3
+0.7.4-SNAPSHOT
 Zeppelin: Alluxio interpreter
 
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/8a2b46a2/angular/pom.xml
--
diff --git a/angular/pom.xml b/angular/pom.xml
index 5701eac..1c83fe4 100644
--- a/angular/pom.xml
+++ b/angular/pom.xml
@@ -22,14 +22,14 @@
   
 zeppelin
 org.apache.zeppelin
-0.7.3
+0.7.4-SNAPSHOT
 ..
   
 
   org.apache.zeppelin
   zeppelin-angular
   jar
-  0.7.3
+  0.7.4-SNAPSHOT
   Zeppelin: Angular interpreter
 
   

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/8a2b46a2/beam/pom.xml
--
diff --git a/beam/pom.xml b/beam/pom.xml
index 833da55..03748fe

[zeppelin] Git Push Summary

2017-09-18 Thread minalee 
Repository: zeppelin
Updated Tags:  refs/tags/v0.7.3-rc5 [created] 5d246c96b

zeppelin git commit: [HOTFIX] Forward compatibility of Note class

2017-09-18 Thread jongyoul 
Repository: zeppelin
Updated Branches:
  refs/heads/branch-0.7 54eb18f41 -> abdf3352e


[HOTFIX] Forward compatibility of Note class

### What is this PR for?
Solving inconsistency issue of Note's dateformat between branch-0.7 and master. 
It's related to #2272

### What type of PR is it?
[Hot Fix]

### Todos
* [x] - Support several dateformat for Note class

### What is the Jira issue?
* N/A

### How should this be tested?
* Sync with some remote repository

### Screenshots (if appropriate)

### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No

Author: Jongyoul Lee 

Closes #2591 from jongyoul/hotfix/note-json-forward-compatibility and squashes 
the following commits:

046a245e [Jongyoul Lee] Fixed style
492e7d30 [Jongyoul Lee] Make test case more concrete
13b9aef5 [Jongyoul Lee] Added one more deserialize option
53add839 [Jongyoul Lee] Hotfix for forward compatibility of Note.class


Project: http://git-wip-us.apache.org/repos/asf/zeppelin/repo
Commit: http://git-wip-us.apache.org/repos/asf/zeppelin/commit/abdf3352
Tree: http://git-wip-us.apache.org/repos/asf/zeppelin/tree/abdf3352
Diff: http://git-wip-us.apache.org/repos/asf/zeppelin/diff/abdf3352

Branch: refs/heads/branch-0.7
Commit: abdf3352e5817e2da0de29f51b72d761cabb4919
Parents: 54eb18f
Author: Jongyoul Lee 
Authored: Mon Sep 18 13:53:44 2017 +0900
Committer: Jongyoul Lee 
Committed: Mon Sep 18 17:01:19 2017 +0900

--
 .../java/org/apache/zeppelin/notebook/Note.java | 42 +++-
 .../org/apache/zeppelin/notebook/Notebook.java  |  2 +-
 .../notebook/NotebookImportDeserializer.java| 12 ++---
 .../notebook/repo/AzureNotebookRepo.java|  6 +--
 .../zeppelin/notebook/repo/S3NotebookRepo.java  |  2 +-
 .../zeppelin/notebook/repo/VFSNotebookRepo.java |  2 +-
 .../repo/zeppelinhub/ZeppelinHubRepo.java   |  4 +-
 .../apache/zeppelin/notebook/ParagraphTest.java | 50 +++-
 8 files changed, 69 insertions(+), 51 deletions(-)
--


http://git-wip-us.apache.org/repos/asf/zeppelin/blob/abdf3352/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
--
diff --git 
a/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java 
b/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
index 1964a08..ae0de5d 100644
--- a/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
+++ b/zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Note.java
@@ -17,21 +17,37 @@
 
 package org.apache.zeppelin.notebook;
 
-import static java.lang.String.format;
-
+import com.google.common.base.Preconditions;
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 import java.io.IOException;
 import java.io.Serializable;
-import java.util.*;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
-
 import org.apache.commons.lang.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.apache.zeppelin.conf.ZeppelinConfiguration;
 import org.apache.zeppelin.display.AngularObject;
 import org.apache.zeppelin.display.AngularObjectRegistry;
 import org.apache.zeppelin.display.Input;
-import org.apache.zeppelin.interpreter.*;
+import org.apache.zeppelin.interpreter.Interpreter;
+import org.apache.zeppelin.interpreter.InterpreterException;
+import org.apache.zeppelin.interpreter.InterpreterFactory;
+import org.apache.zeppelin.interpreter.InterpreterGroup;
+import org.apache.zeppelin.interpreter.InterpreterResult;
+import org.apache.zeppelin.interpreter.InterpreterResultMessage;
+import org.apache.zeppelin.interpreter.InterpreterSetting;
+import org.apache.zeppelin.interpreter.InterpreterSettingManager;
 import org.apache.zeppelin.interpreter.remote.RemoteAngularObjectRegistry;
 import org.apache.zeppelin.interpreter.thrift.InterpreterCompletion;
 import org.apache.zeppelin.notebook.repo.NotebookRepo;
@@ -42,11 +58,8 @@ import org.apache.zeppelin.scheduler.Job.Status;
 import org.apache.zeppelin.search.SearchService;
 import org.apache.zeppelin.user.AuthenticationInfo;
 import org.apache.zeppelin.user.Credentials;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Preconditions;
-import com.google.gson.Gson;
+import static java.lang.String.format;
 
 /**
  * Binded interpreters for a note
@@ -59,6 +72,10 @@ public class Note implements Serializable, 
ParagraphJobListener {
   private static