Cannot create new session after run few sessions

[nghiadhd]

I wrote a test script to measure long run capability of Appium.
However after a few sessions, the appium stub at create new session

[debug] [JSONWP Proxy] Proxying [POST /session] to [POST http://127.0.0.1:8000/wd/hub/session] with body: {"desiredCapabilities":{"chromeOptions":{"androidPackage":"com.android.chrome","androidDeviceSerial":"988633304d4b323634"}}}

I used 'adb' to check "chrome" process on device and see that many chrome processes are leaking

./adb shell ps | grep chrome                        
u0_a85    2757  3184  1578696 194580 SyS_epoll_ 0000000000 S com.android.chrome
u0_i39    2804  3184  1201756 86092 SyS_epoll_ 0000000000 S com.android.chrome:sandboxed_process0
u0_a85    2836  3184  1212104 93312 SyS_epoll_ 0000000000 S com.android.chrome:privileged_process0
u0_a86    10842 3183  1664788 59756 SyS_epoll_ 0000000000 S com.sec.android.app.chromecustomizations
u0_a85    30465 3184  1548556 182592 SyS_epoll_ 0000000000 S com.android.chrome
u0_a85    30671 3184  1234504 89732 SyS_epoll_ 0000000000 S com.android.chrome

Because my device is non-root so I cannot kill "chrome" process by 'shell pkill' or 'am force-stop com.android.chrome'.
Now my device cannot work with appium any more until restarting to clean up leaking processes

Environment:
Appium: 1.6.1/1.6.2
Chromedriver: 2.25
Nodejs: v6.8.0
NPM: 3.10.8

Device:
Galaxy S7: SM-G930F
Android: 6.0.1
Chrome: 54.0.2840.85

Start commands:

• Appium
  node build/lib/main.js --command-timeout "7200" --debug-log-spacing --default-capabilities '{"platformName":"Android"}' --default-device

• Client
  UDID=988633304d4b323634 PLATFORM=Android npm run wd

Appium's log: https://gist.github.com/nghiadhd/88c8bf0e14ac32f2f47f3e3052d2ddfa
Testscript: https://gist.github.com/nghiadhd/8388fe2b2e9e1917298e0b9d4d52d952

[rkavalap]

Issue moved to appium/appium #7407 via ZenHub