Update custom executor example

[edi33416]

I've been trying to run the mesos-executor as the custom executor, by following the instructions but I wasn't successful.

My custom-executor.json file looks like this

[
    {
        "executor": {
            "name": "theDefaultMesosExecutor",
            "command": {
                "value": "/usr/libexec/mesos/mesos-executor",
                "shell": "true"
            },
            "resources": [
            {
                "name": "cpus",
                "type": "SCALAR",
                "scalar": {
                    "value": 0.1
                }
            },
            {
                "name": "mem",
                "type": "SCALAR",
                "scalar": {
                    "value": 256
                }
            }
            ]
        },
        "task_prefix": "mes-exec-"
    }
]

And I get the following error

I0807 11:22:38.310045 20943 exec.cpp:162] Version: 1.6.0
I0807 11:22:38.317176 20950 exec.cpp:236] Executor registered on agent 7e84b258-a9a7-469d-994b-f5a154b665b5-S1
I0807 11:22:38.319226 20943 executor.cpp:178] Received SUBSCRIBED event
I0807 11:22:38.319492 20943 executor.cpp:182] Subscribed executor on agent-node
I0807 11:22:38.319573 20943 executor.cpp:178] Received LAUNCH event
F0807 11:22:38.325577 20943 executor.cpp:569] Expecting task 'dev-devel-hello_world2-0-fe85afac-67c5-4e07-aac8-2168942a9000' to have a command
*** Check failure stack trace: ***
    @     0x7feb93cb122d  google::LogMessage::Fail()
    @     0x7feb93cb307d  google::LogMessage::SendToLog()
    @     0x7feb93cb0e13  google::LogMessage::Flush()
    @     0x7feb93cb3a79  google::LogMessageFatal::~LogMessageFatal()
    @     0x56158be584f0  mesos::internal::CommandExecutor::launch()
    @     0x56158be5a862  mesos::internal::CommandExecutor::received()
    @     0x56158be5b1bb  _ZNSt17_Function_handlerIFvvEZZNO7process9_DeferredIZN5mesos8internal15CommandExecutor10initializeEvEUlSt5queueINS3_2v18executor5EventESt5dequeIS9_SaIS9_EEEE0_EcvSt8functionIFvT_EEIRKSD_EEvENKUlSM_E_clESM_EUlvE_E9_M_invokeERKSt9_Any_data
    @     0x7feb93bfa9d1  process::ProcessBase::consume()
    @     0x7feb93c1a4fa  process::ProcessManager::resume()
    @     0x7feb93c1aa28  process::ProcessManager::wait()
    @     0x7feb93c1b037  process::wait()
    @     0x56158be1a3b9  main
    @     0x7feb908ff3d5  __libc_start_main
    @     0x56158be1ab05  (unknown)

Thank you!

[mauri]

@edi33416 what's the value of the "data" parameter in your ExecutorConfig?

[edi33416]

@mauri I can't remember what the data parameter was. This was related to my internship project which ended last year, and I don't have access to the code anymore.

[edi33416]

I think I tried both leaving the default "" (empty string) value and a simple ls