GitHub user manuzhang opened a pull request:
https://github.com/apache/incubator-gearpump/pull/31
fix GEARPUMP-83, show application pending on worker down
Changes include:
1. add `activeAppMasters` set to `masterState` and `deadAppMasters` is
changed to set of appIds. Now all existent applications will be in
`appMasterRegistry` and in **pending** status by default. Those in
`activeAppMasters` will have **active** status and `deadAppMasters`
**inactive** status.
2. add a status column to the "apps" page on the dashboard. status will be
one of pending, active and inactive.
3. Internally, `TaskManager` will send an `ApplicationReady` message to
`AppMaster` on ApplicationReady state(with DAG version larger than -1). In
turn, `AppMaster` will send an `ActivateApplication(appId)` message to
`Master`(forwarded to `AppManager`). Then the `appId` is added to
`activeAppMasters`. It is removed from `activeAppMasters` either when an
application is killed or recovered.
4. add UTs and fix a bunch of warnings (typos, suspicious shadowing, etc)
The snapshot of "apps" page with active and inactive applications

The snapshot of "apps" page when all workers down

You can merge this pull request into a Git repository by running:
$ git pull https://github.com/manuzhang/incubator-gearpump appmaster_status
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-gearpump/pull/31.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #31
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commit 9529796fc319f1ed69cc6cf726d8f1afef47ef1b
Author: manuzhang <[email protected]>
Date: 2016-05-31T07:47:09Z
fix GEARPUMP-83, show application pending on worker down
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