Github user doanduyhai commented on the issue:

    https://github.com/apache/zeppelin/pull/746
  
    Ok, there are 3 unrelated errors:
    
    1) https://s3.amazonaws.com/archive.travis-ci.org/jobs/155941982/log.txt
    
    ```
    [32mAngularElem
    - should provide onclick method *** FAILED ***
      The code passed to eventually never returned normally. Attempted 1 
times over 208.64569899999998 milliseconds. Last failure message: 0 was not 
equal to 1. (AbstractAngularElemTest.scala:72)
    ```
    
    The test timeoud because the default implicit for Scala `eventually {a 
should be(1)}` is only 150ms. Timeout is a recurrent issue when running in 
containers in Travis
    
    2) https://s3.amazonaws.com/archive.travis-ci.org/jobs/155941985/log.txt
    
    Some flaky remote interpreter test. When running locally the test with `mvn 
test 
-Dtest=org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcessTest` it 
is successful:
    
    ```
    -------------------------------------------------------
     T E S T S
    -------------------------------------------------------
    Running org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcessTest
    16:48:19,231  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:116 - 
Run interpreter process [../bin/interpreter.sh, -d, nonexists, -p, 64503, -l, 
fakeRepo]
    16:48:20,317  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:127 - shutdown 
interpreter process
    16:48:22,579  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:137 - Exception 
in RemoteInterpreterProcess while synchronized dereference, can safely ignore 
exception while client.shutdown() may terminates remote process
    16:48:22,580  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:154 - 
Interpreter process exited 0
    16:48:23,103  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer:89 - Starting 
remote interpreter server on port 3678
    16:48:23,471  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:116 - 
Run interpreter process [../bin/interpreter.sh, -d, nonexists, -p, 64509, -l, 
fakeRepo]
    16:48:23,979  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:116 - 
Run interpreter process [../bin/interpreter.sh, -d, nonexists, -p, 64512, -l, 
fakeRepo]
    16:48:24,485  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:127 - shutdown 
interpreter process
    16:48:26,630  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcess:137 - Exception 
in RemoteInterpreterProcess while synchronized dereference, can safely ignore 
exception while client.shutdown() may terminates remote process
    16:48:26,632  INFO 
org.apache.zeppelin.interpreter.remote.RemoteInterpreterManagedProcess:154 - 
Interpreter process exited 0
    Tests run: 3, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 8.076 sec - 
in org.apache.zeppelin.interpreter.remote.RemoteInterpreterProcessTest
    
    Results :
    
    Tests run: 3, Failures: 0, Errors: 0, Skipped: 0
    ```
    
    3) https://s3.amazonaws.com/archive.travis-ci.org/jobs/155942015/log.txt
    
    Just a classical NPM download failure:
    
    ```
    [INFO] --- frontend-maven-plugin:0.0.25:npm (npm install) @ zeppelin-web ---
    [INFO] Running 'npm install --color=false' in 
/home/travis/build/apache/zeppelin/zeppelin-web
    [ERROR] npm WARN deprecated minimatch@0.2.14: Please update to minimatch 
3.0.2 or higher to avoid a RegExp DoS issue
    [ERROR] npm WARN deprecated minimatch@2.0.10: Please update to minimatch 
3.0.2 or higher to avoid a RegExp DoS issue
    [ERROR] npm WARN deprecated graceful-fs@2.0.3: graceful-fs v3.0.0 and 
before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 
as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
    [ERROR] npm WARN deprecated minimatch@0.3.0: Please update to minimatch 
3.0.2 or higher to avoid a RegExp DoS issue
    [ERROR] npm WARN deprecated lodash@1.0.2: lodash@<3.0.0 is no longer 
maintained. Upgrade to lodash@^4.0.0.
    [ERROR] npm WARN deprecated graceful-fs@1.2.3: graceful-fs v3.0.0 and 
before will fail on node releases >= v7.0. Please update to graceful-fs@^4.0.0 
as soon as possible. Use 'npm ls graceful-fs' to find it in the tree.
    [ERROR] npm WARN deprecated tough-cookie@2.2.2: ReDoS vulnerability parsing 
Set-Cookie https://nodesecurity.io/advisories/130
    [ERROR] npm WARN deprecated CSSselect@0.7.0: the module is now available as 
'css-select'
    [ERROR] npm WARN deprecated CSSwhat@0.4.7: the module is now available as 
'css-what'
    [ERROR] npm WARN optional dep failed, continuing fsevents@1.0.14
    [ERROR] npm ERR! Linux 3.13.0-40-generic
    [ERROR] npm ERR! argv 
"/home/travis/build/apache/zeppelin/zeppelin-web/node/node" 
"/home/travis/build/apache/zeppelin/zeppelin-web/node/node_modules/npm/bin/npm-cli.js"
 "install" "--color=false"
    [ERROR] npm ERR! node v0.12.13
    [ERROR] npm ERR! npm  v2.15.0
    [ERROR] npm ERR! code ECONNRESET
    [ERROR] npm ERR! errno ECONNRESET
    [ERROR] npm ERR! syscall read
    [ERROR] 
    [ERROR] npm ERR! network read ECONNRESET
    [ERROR] npm ERR! network This is most likely not a problem with npm itself
    [ERROR] npm ERR! network and is related to network connectivity.
    [ERROR] npm ERR! network In most cases you are behind a proxy or have bad 
network settings.
    [ERROR] npm ERR! network 
    [ERROR] npm ERR! network If you are behind a proxy, please make sure that 
the
    [ERROR] npm ERR! network 'proxy' config is set properly.  See: 'npm help 
config'
    [INFO] 
    [INFO] > ws@0.4.32 install 
/home/travis/build/apache/zeppelin/zeppelin-web/node_modules/karma/node_modules/socket.io/node_modules/socket.io-client/node_modules/ws
    [INFO] > (node-gyp rebuild 2> builderror.log) || (exit 0)
    ```
    
    @felixcheung @jongyoul Can we merge this and move on ? This PR has been 
there for a while and I have re-based it many times against master


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