Github user bzz commented on the issue:
https://github.com/apache/zeppelin/pull/1125
CI failure is not related to this changes
On ALL profiles we have `[INFO] Zeppelin: web Application
.......................... FAILURE [05:49 min]`
```
[INFO] make: Entering directory
`/home/travis/build/apache/zeppelin/zeppelin-web/node_modules/karma/node_modules/socket.io/node_modules/socket.io-client/node_modules/ws/build'
[INFO] CXX(target) Release/obj.target/bufferutil/src/bufferutil.o
[INFO] SOLINK_MODULE(target) Release/obj.target/bufferutil.node
[INFO] COPY Release/bufferutil.node
[INFO] CXX(target) Release/obj.target/validation/src/validation.o
[INFO] SOLINK_MODULE(target) Release/obj.target/validation.node
[INFO] COPY Release/validation.node
[INFO] make: Leaving directory
`/home/travis/build/apache/zeppelin/zeppelin-web/node_modules/karma/node_modules/socket.io/node_modules/socket.io-client/node_modules/ws/build'
[ERROR] npm ERR! fetch failed
https://registry.npmjs.org/caseless/-/caseless-0.9.0.tgz
[ERROR] npm WARN retry will retry, error on last attempt: Error: fetch
failed with status code 502
[ERROR] npm ERR! fetch failed
https://registry.npmjs.org/commander/-/commander-2.2.0.tgz
[ERROR] npm WARN retry will retry, error on last attempt: Error: fetch
failed with status code 502
[ERROR] npm ERR! fetch failed
https://registry.npmjs.org/batch/-/batch-0.5.0.tgz
```
Looks like a networking issue with npm.. @cloverhearts could you try
re-triggering CI today please?
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