Thanks for the quick response Billie. I've done a fresh run, I'm still seeing
the same issue.
I suspect that the json deserialization is not occurring, and that the
deserializer is not being found at run time.
For the current run, I've made a small change to the appConfig.json to remove
the agent.ini, but didn't change the --manager lines.
[root@quickstart mybuild]# cat
./incubator-slider/app-packages/memcached/appConfig.json
{
"schema": "http://example.org/specification/v2.0.0";,
"metadata": {
},
"global": {
"application.def": ".slider/package/jmemcached/jmemcached-1.0.1.zip",
"java_home": "/usr/lib/jvm/java/",
"site.global.additional_cp": "",
"site.global.xmx_val": "256m",
"site.global.xms_val": "128m",
"site.global.memory_val": "200M",
"site.global.listen_port": "11211"
},
"components": {
"slider-appmaster": {
"jvm.heapsize": "256M"
}
}
}
The python version is:
[root@quickstart mybuild]# python -V
Python 2.7.5
So that we can isolate relevant data based on log time stamps, the
slider-agent.log shows the first failure at:
INFO 2017-04-28 18:45:48,109 Controller.py:138 - Registering with the server at
https://quickstart.cloudera:36837/ws/v1/slider/agents/container_1493405038155_0001_01_000002___MEMCACHED/register
with data '{"actualState": 0, "logFolders": {}, "agentVersion": "1",
"allocatedPorts": {}, "timestamp": 1493405148109, "expectedState": 0, "tags":
"", "responseId": -1, "publicHostname": "quickstart.cloudera", "label":
"container_1493405038155_0001_01_000002___MEMCACHED"}'
INFO 2017-04-28 18:45:48,109 security.py:89 - SSL Connect being called..
connecting to the server
INFO 2017-04-28 18:45:48,181 security.py:51 - SSL connection established.
Two-way SSL authentication is turned off on the server.
INFO 2017-04-28 18:45:48,194 Controller.py:140 - Registration response =
'<html>\n<head>\n<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1"/>\n<title>Error 415 Unsupported Media
Type</title>\n</head>\n<body><h2>HTTP ERROR 415</h2>\n<p>Problem accessing
/ws/v1/slider/agents/container_1493405038155_0001_01_000002___MEMCACHED/register.
Reason:\n<pre> Unsupported Media Type</pre></p><hr /><i><small>Powered by
Jetty://</small></i><br/>
\n<br/> \n<br/>
\n<br/>
\n<br/> \n<br/>
\n<br/>
\n<br/> \n<br/>
\n<br/>
\n<br/> \n<br/>
\n<br/>
\n<br/>
\n<br/> \n<br/>
\n<br/>
\n<br/> \n<br/>
\n<br/>
\n\n</body>\n</html>\n'
The AM logs have slider have slider-err.txt which has repeated reports
corresponding to the SEVERE message at the end:
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[jar:file:/var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root/appcache/application_1493405038155_0001/filecache/74/slider.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root/appcache/application_1493405038155_0001/filecache/20/slider-core-0.60.0-incubating.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root/appcache/application_1493405038155_0001/filecache/27/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Apr 28, 2017 6:45:39 PM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Scanning for root resource and provider classes in the packages:
org.apache.slider.server.appmaster.web.rest.agent
Apr 28, 2017 6:45:41 PM com.sun.jersey.api.core.ScanningResourceConfig
logClasses
INFO: Root resource classes found:
class org.apache.slider.server.appmaster.web.rest.agent.AgentWebServices
Apr 28, 2017 6:45:41 PM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Apr 28, 2017 6:45:42 PM
com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.9 09/02/2011 11:17 AM'
Apr 28, 2017 6:45:48 PM com.sun.jersey.spi.inject.Errors processErrorMessages
WARNING: The following warnings have been detected with resource and/or
provider classes:
WARNING: A sub-resource method, public javax.ws.rs.core.Response
org.apache.slider.server.appmaster.web.rest.agent.AgentResource.endpointRoot(),
with URI template, "/", is treated as a resource method
Apr 28, 2017 6:45:48 PM com.sun.jersey.spi.container.ContainerRequest getEntity
SEVERE: A message body reader for Java class
org.apache.slider.server.appmaster.web.rest.agent.Register, and Java type class
org.apache.slider.server.appmaster.web.rest.agent.Register, and MIME media type
application/json was not found.
The registered message body readers compatible with the MIME media type are:
*/* ->
com.sun.jersey.core.impl.provider.entity.FormProvider
com.sun.jersey.core.impl.provider.entity.StringProvider
com.sun.jersey.core.impl.provider.entity.ByteArrayProvider
com.sun.jersey.core.impl.provider.entity.FileProvider
com.sun.jersey.core.impl.provider.entity.InputStreamProvider
com.sun.jersey.core.impl.provider.entity.DataSourceProvider
com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General
com.sun.jersey.core.impl.provider.entity.ReaderProvider
com.sun.jersey.core.impl.provider.entity.DocumentProvider
com.sun.jersey.core.impl.provider.entity.SourceProvider$StreamSourceReader
com.sun.jersey.core.impl.provider.entity.SourceProvider$SAXSourceReader
com.sun.jersey.core.impl.provider.entity.SourceProvider$DOMSourceReader
com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General
com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General
com.sun.jersey.core.impl.provider.entity.XMLRootObjectProvider$General
com.sun.jersey.core.impl.provider.entity.EntityHolderReader
The AM Logs for slider.log reports:
2017-04-28 18:45:45,398 [main] INFO agent.AgentClientProvider - Validating app
definition .slider/package/jmemcached/jmemcached-1.0.1.zip
2017-04-28 18:45:45,416 [AmExecutor-006] INFO state.AppState - Reviewing
RoleStatus{name='MEMCACHED', key=1, minimum=0, maximum=1, desired=1, actual=0,
requested=0, releasing=0, failed=0, started=0, startFailed=0, completed=0,
failureMessage=''} : expected 1
2017-04-28 18:45:45,417 [AmExecutor-006] INFO state.AppState - MEMCACHED:
Asking for 1 more nodes(s) for a total of 1
2017-04-28 18:45:45,422 [AmExecutor-006] INFO state.AppState - Container ask
is Capability[<memory:256, vCores:1>]Priority[1073741825] and label = null
2017-04-28 18:45:46,805 [AMRM Heartbeater thread] INFO impl.AMRMClientImpl -
Received new token for : quickstart.cloudera:42111
2017-04-28 18:45:46,806 [AMRM Callback Handler Thread] INFO
appmaster.SliderAppMaster - onContainersAllocated(1)
2017-04-28 18:45:46,808 [AMRM Callback Handler Thread] INFO state.AppState -
Assigning role MEMCACHED to container container_1493405038155_0001_01_000002,
on quickstart.cloudera:42111,
2017-04-28 18:45:46,811 [AMRM Callback Handler Thread] INFO
appmaster.SliderAppMaster - Diagnostics: RoleStatus{name='slider-appmaster',
key=0, minimum=0, maximum=1, desired=1, actual=1, requested=0, releasing=0,
failed=0, started=1, startFailed=0, completed=0, failureMessage=''}
RoleStatus{name='MEMCACHED', key=1, minimum=0, maximum=1, desired=1, actual=1,
requested=0, releasing=0, failed=0, started=0, startFailed=0, completed=0,
failureMessage=''}
2017-04-28 18:45:46,826 [RoleLaunchService-007] INFO
agent.AgentProviderService - Build launch context for Agent
2017-04-28 18:45:46,830 [RoleLaunchService-007] INFO
agent.AgentProviderService - AGENT_WORK_ROOT set to $PWD
2017-04-28 18:45:46,830 [RoleLaunchService-007] INFO
agent.AgentProviderService - AGENT_LOG_ROOT set to <LOG_DIR>
2017-04-28 18:45:46,830 [RoleLaunchService-007] INFO
agent.AgentProviderService - PYTHONPATH set to ./infra/agent/slider-agent/
2017-04-28 18:45:46,846 [RoleLaunchService-007] INFO
agent.AgentProviderService - Using ./infra/agent/slider-agent/agent/main.py for
agent.
2017-04-28 18:45:46,852 [RoleLaunchService-007] INFO
appmaster.RoleLaunchService - Starting container with command: python
./infra/agent/slider-agent/agent/main.py --label
container_1493405038155_0001_01_000002___MEMCACHED --zk-quorum localhost:2181
--zk-reg-path /registry/users/root/services/org-apache-slider/jmemcached >
<LOG_DIR>/slider-agent.out 2>&1 ;
2017-04-28 18:45:46,852 [RoleLaunchService-007] INFO
appmaster.RoleLaunchService - Container launch delay for MEMCACHED set to 0
seconds
2017-04-28 18:45:46,906 [AmExecutor-006] WARN appmaster.SliderAppMaster - No
delegation tokens obtained and set for launch context
2017-04-28 18:45:46,984
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #0] INFO
impl.NMClientAsyncImpl - Processing Event EventType: START_CONTAINER for
Container container_1493405038155_0001_01_000002
2017-04-28 18:45:46,987
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #0] INFO
impl.ContainerManagementProtocolProxy - Opening proxy :
quickstart.cloudera:42111
2017-04-28 18:45:47,066
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #0] INFO
appmaster.SliderAppMaster - Started Container
container_1493405038155_0001_01_000002
2017-04-28 18:45:47,228
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #0] INFO
appmaster.SliderAppMaster - Deployed instance of role MEMCACHED onto
container_1493405038155_0001_01_000002
2017-04-28 18:45:47,229 [AmExecutor-006] INFO appmaster.SliderAppMaster -
Registering component container_1493405038155_0001_01_000002
2017-04-28 18:45:47,232
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #1] INFO
impl.NMClientAsyncImpl - Processing Event EventType: QUERY_CONTAINER for
Container container_1493405038155_0001_01_000002
2017-04-28 18:45:47,232
[org.apache.hadoop.yarn.client.api.async.impl.NMClientAsyncImpl #1] INFO
impl.ContainerManagementProtocolProxy - Opening proxy :
quickstart.cloudera:42111
2017-04-28 18:45:47,243 [AmExecutor-006] INFO zk.RegistryOperationsService -
Bound at
/users/root/services/org-apache-slider/jmemcached/components/container-1493405038155-0001-01-000002
: ServiceRecord{description='MEMCACHED'; external endpoints: {}; internal
endpoints: {}, attributes: {"yarn:id"="container-1493405038155-0001-01-000002"
"yarn:persistence"="container" }}
2017-04-28 18:47:44,870 [Thread-37] WARN agent.HeartbeatMonitor - Component
ComponentInstanceState{containerIdAsString='container_1493405038155_0001_01_000002',
state=INIT, failuresSeen=0, lastHeartbeat=1493405146852,
containerState=UNHEALTHY, componentName='MEMCACHED'} marked UNHEALTHY. Last
heartbeat received at 1493405146852 approx. 118017 ms. back.
2017-04-28 18:48:44,872 [Thread-37] WARN agent.HeartbeatMonitor - Component
ComponentInstanceState{containerIdAsString='container_1493405038155_0001_01_000002',
state=INIT, failuresSeen=0, lastHeartbeat=1493405146852,
containerState=HEARTBEAT_LOST, componentName='MEMCACHED'} marked
HEARTBEAT_LOST. Last heartbeat received at 1493405146852 approx. 178020 ms.
back.
2017-04-28 18:48:44,873 [AmExecutor-006] INFO appmaster.SliderAppMaster -
containerLostContactWithProvider: container
container_1493405038155_0001_01_000002 lost
2017-04-28 18:48:44,875 [AmExecutor-006] INFO appmaster.SliderAppMaster -
Container released; triggering review
2017-04-28 18:48:44,875 [AmExecutor-006] INFO state.AppState - Reviewing
RoleStatus{name='MEMCACHED', key=1, minimum=0, maximum=1, desired=1, actual=1,
requested=0, releasing=1, failed=0, started=1, startFailed=0, completed=0,
failureMessage=''} : expected 1
2017-04-28 18:48:45,282 [AMRM Callback Handler Thread] INFO
appmaster.SliderAppMaster - onContainersCompleted([1]
2017-04-28 18:48:45,282 [AMRM Callback Handler Thread] INFO
appmaster.SliderAppMaster - Container Completion for
containerID=container_1493405038155_0001_01_000002, state=COMPLETE,
exitStatus=-100, diagnostics=Container released by application
2017-04-28 18:48:45,283 [AMRM Callback Handler Thread] INFO state.AppState -
Container was queued for release : container_1493405038155_0001_01_000002
2017-04-28 18:48:45,283 [AMRM Callback Handler Thread] INFO state.AppState -
decrementing role count for role MEMCACHED to 0; releasing=0, completed=0
2017-04-28 18:48:45,737 [AMRM Callback Handler Thread] INFO state.AppState -
Removing node ID container_1493405038155_0001_01_000002
2017-04-28 18:48:45,738 [AmExecutor-006] INFO appmaster.SliderAppMaster -
Unregistering component container_1493405038155_0001_01_000002
________________________________
From: Billie Rinaldi <billie.rina...@gmail.com>
Sent: Friday, April 28, 2017 3:23 PM
To: dev@slider.incubator.apache.org
Subject: Re: Slider fails to launch the memcached container in my version of
the example, Registration Response gets a Error 415 Unsupported Media Type
I tried spinning up a memcached app and did not encounter this issue. I
don't really see anything wrong with your configuration. We do not
recommend trying to use a custom agent.ini, so I'd remove that. Also you
don't have to specify --manager localhost:8032 in the Slider create command
when Slider is reading that info from the yarn-site.xml. I don't expect
those changes to affect the issue you're seeing, though. What version of
Python are you using? What does the AM log say?
On Thu, Apr 27, 2017 at 5:47 PM, Foolish Ewe <foolish...@hotmail.com> wrote:
> Hello All:
>
>
> First, thanks to Billie Rinaldi for the previous help, however I am still
> trying to get the memcached example to work in my slider environment and I
> could use some guidance as to whether there is some configuration error or
> an actual slider issue.
>
> Informally it looks like the application master container is launched but
> the container that is supposed to launch memcached is failing at
> registration time, in particular, after adding some logging, I wee that the
> Registration Response is as follows:
>
> INFO 2017-04-27 21:58:40,722 Controller.py:140 - Registration response =
> '<html>\n<head>\n<meta http-equiv="Content-Type" content="text/html;
> charset=ISO-8859-1"/>\n<title>Error 415 Unsupported Media
> Type</title>\n</head>\n<body><h2>HTTP ERROR 415</h2>\n<p>Problem
> accessing
> /ws/v1/slider/agents/container_1493330089109_0001_01_000002___MEMCACHED/register.
> Reason:\n<pre> Unsupported Media Type</pre></p><hr /><i><small>Powered
> by Jetty://</small></i><br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n\n</body>\n</html>\n'
>
>
>
>
> Here is a more detailed description of what I did and my configuration. I
> run the following commands in a single node docker instance (effectively on
> a logical edge node):
>
> To install the package I run the command:
>
> /usr/lib/slider/bin/slider install-package --package
> /tmp/mybuild/incubator-slider/app-packages/memcached/jmemcached-1.0.1.zip
> --name jmemcached --debug --replacepkg
>
> To launch the package I run the command:
>
> /usr/lib/slider/bin/slider create jmemcached --template
> /tmp/mybuild/incubator-slider/app-packages/memcached/appConfig.json
> --resources
> /tmp/mybuild/incubator-slider/app-packages/memcached/resources-default.json
> --manager localhost:8032 --debug
>
> Where the configuration files read:
>
> [root@quickstart mybuild]# cat /tmp/mybuild/incubator-slider/
> app-packages/memcached/appConfig.json
>
> {
>
> "schema": "http://example.org/specification/v2.0.0";,
>
> "metadata": {
>
> },
>
> "global": {
>
> "agent.conf": "artifacts/agent/conf/agent.ini",
>
> "application.def": ".slider/package/jmemcached/jmemcached-1.0.1.zip",
>
> "java_home": "/usr/lib/jvm/java/",
>
> "site.global.additional_cp": "",
>
> "site.global.xmx_val": "256m",
>
> "site.global.xms_val": "128m",
>
> "site.global.memory_val": "200M",
>
> "site.global.listen_port": "11211"
>
> },
>
> "components": {
>
> "slider-appmaster": {
>
> "jvm.heapsize": "256M"
>
> }
>
> }
>
> }
>
> [root@quickstart mybuild]# cat /tmp/mybuild/incubator-slider/
> app-packages/memcached/resources-default.json
>
> {
>
> "schema" : "http://example.org/specification/v2.0.0";,
>
> "metadata" : {
>
> },
>
> "global" : {
>
> },
>
> "components": {
>
> "slider-appmaster": {
>
> },
>
> "MEMCACHED": {
>
> "yarn.role.priority": "1",
>
> "yarn.component.instances": "1",
>
> "yarn.memory": "256"
>
> }
>
> }
>
> }
>
> [root@quickstart mybuild]# cat ./incubator-slider/app-package
> s/memcached/metainfo.xml
>
> <?xml version="1.0"?>
>
> <!--
>
> Licensed to the Apache Software Foundation (ASF) under one or more
>
> contributor license agreements. See the NOTICE file distributed with
>
> this work for additional information regarding copyright ownership.
>
> The ASF licenses this file to You under the Apache License, Version 2.0
>
> (the "License"); you may not use this file except in compliance with
>
> the License. You may obtain a copy of the License at
>
>
> http://www.apache.org/licenses/LICENSE-2.0
Apache License 2.0 - Apache Software
Foundation<http://www.apache.org/licenses/LICENSE-2.0>
www.apache.org
Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS
AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions ...
>
>
> Unless required by applicable law or agreed to in writing, software
>
> distributed under the License is distributed on an "AS IS" BASIS,
>
> WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>
> See the License for the specific language governing permissions and
>
> limitations under the License.
>
> -->
>
>
> <metainfo>
>
> <schemaVersion>2.0</schemaVersion>
>
> <application>
>
> <name>MEMCACHED</name>
>
> <comment>Memcache is a network accessible key/value storage system,
> often used as a distributed cache.</comment>
>
> <!-- Changed version to see if I can get a hand built fat jar to work,
> where I control dependencies
>
> <version>1.0.0</version>
>
> -->
>
> <version>1.0.1-SNAPSHOT-jar-with-dependencies</version>
>
> <exportedConfigs>None</exportedConfigs>
>
> <exportGroups>
>
> <exportGroup>
>
> <name>Servers</name>
>
> <exports>
>
> <export>
>
> <name>host_port</name>
>
> <value>${MEMCACHED_HOST}:${site.global.listen_port}</value>
>
> </export>
>
> </exports>
>
> </exportGroup>
>
> </exportGroups>
>
>
> <components>
>
> <component>
>
> <name>MEMCACHED</name>
>
> <category>MASTER</category>
>
> <compExports>Servers-host_port</compExports>
>
> <commandScript>
>
> <script>scripts/memcached.py</script>
>
> <scriptType>PYTHON</scriptType>
>
> </commandScript>
>
> </component>
>
> </components>
>
>
> <osSpecifics>
>
> <osSpecific>
>
> <osType>any</osType>
>
> <packages>
>
> <package>
>
> <type>tarball</type>
>
> <name>files/jmemcached-1.0.1.tar</name>
>
> </package>
>
> </packages>
>
> </osSpecific>
>
> </osSpecifics>
>
>
> </application>
>
> </metainfo>
>
> I did some code diving and enhance the logging, based on earlier
> observations:
> In Controller.py I added some logging, in particular look at the
> Registration Response and to determine if the registerUrl was well formed.
>
> self.registerUrl = self.server_url + SLIDER_PATH_AGENTS + self.label +
> SLIDER_REL_PATH_REGISTER
>
> #Some code omitted
>
> while not self.isRegistered:
> try:
> data = json.dumps(self.register.build(
> self.componentActualState,
> self.componentExpectedState,
> self.actionQueue.customServiceOrchestrator.allocated_ports,
> self.actionQueue.customServiceOrchestrator.log_folders,
> self.tags,
> id))
> logger.info("Registering with the server at " + self.registerUrl +
> " with data " + pprint.pformat(data))
> response = self.sendRequest(self.registerUrl, data)
> logger.info("Registration response = " + pprint.pformat(response))
> logger.info("Dumping dir(self) = " + pprint.pformat(dir(self)))
> logger.info("Dumping vars(self) = " + pprint.pformat(vars(self)))
> logger.info("Dumping vars(self.config" +
> pprint.pformat(vars(self.config)))
> regResp = json.loads(response)
>
> The logs indicated several HTTP 415 error responses, that seemed to
> prevent the launch.
>
> INFO 2017-04-27 21:58:40,606 Controller.py:138 - Registering with the
> server at https://quickstart.cloudera:42131/ws/v1/slider/agents/contai
> ner_1493330089109_0001_01_000002___MEMCACHED/register with data
> '{"actualState": 0, "logFolders": {}, "agentVersion": "1",
> "allocatedPorts": {}, "timestamp": 1493330320605, "expectedState": 0,
> "tags": "", "responseId": -1, "publicHostname": "quickstart.cloudera",
> "label": "container_1493330089109_0001_01_000002___MEMCACHED"}'
>
>
> [ Lines removed to reduce log noise]
>
> INFO 2017-04-27 21:58:40,722 Controller.py:140 - Registration response =
> '<html>\n<head>\n<meta http-equiv="Content-Type" content="text/html;
> charset=ISO-8859-1"/>\n<title>Error 415 Unsupported Media
> Type</title>\n</head>\n<body><h2>HTTP ERROR 415</h2>\n<p>Problem
> accessing
> /ws/v1/slider/agents/container_1493330089109_0001_01_000002___MEMCACHED/register.
> Reason:\n<pre> Unsupported Media Type</pre></p><hr /><i><small>Powered
> by Jetty://</small></i><br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n<br/>
> \n<br/> \n<br/>
> \n<br/>
> \n\n</body>\n</html>\n'
> [Lines removed here to reduce log noise]
> INFO 2017-04-27 21:58:40,724 Controller.py:143 - Dumping
> vars(self.config{'label': 'container_1493330089109_0001_
> 01_000002___MEMCACHED',
> 'logroot': '/var/log/hadoop-yarn/containers/application_1493330089109_
> 0001/container_1493330089109_0001_01_000002',
> 'workroot': '/var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root
> /appcache/application_1493330089109_0001/container_149333008
> 9109_0001_01_000002'}
> INFO 2017-04-27 21:58:40,725 Controller.py:185 - Unable to connect to:
> https://quickstart.cloudera:42131/ws/v1/slider/agents/contai
> ner_1493330089109_0001_01_000002___MEMCACHED/register
> Traceback (most recent call last):
> File "/var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root
> /appcache/application_1493330089109_0001/filecache/21/
> slider-agent.tar.gz/slider-agent/agent/Controller.py", line 144, in
> registerWithServer
> regResp = json.loads(response)
> File "/usr/lib64/python2.7/json/__init__.py", line 338, in loads
> return _default_decoder.decode(s)
> File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
> obj, end = self.raw_decode(s, idx=_w(s, 0).end())
> File "/usr/lib64/python2.7/json/decoder.py", line 384, in raw_decode
> raise ValueError("No JSON object could be decoded")
> ValueError: No JSON object could be decoded
>
>
> I did some code diving and enhance the logging, where I put strings in a
> python list and dump the information once the logging output is configured
> (hence the multiple logged messages at line 265).
> i.e, main.py has:
>
> def main():
> parser = OptionParser()
> parser.add_option("-v", "--verbose", dest="verbose", help="verbose log
> output", default=False)
> parser.add_option("-l", "--label", dest="label", help="label of the
> agent", default=None)
> parser.add_option("--zk-quorum", dest=Constants.ZK_QUORUM,
> help="Zookeeper Quorum", default=None)
> parser.add_option("--zk-reg-path", dest=Constants.ZK_REG_PATH,
> help="Zookeeper Registry Path", default=None)
> parser.add_option("--debug", dest="debug", help="Agent debug hint",
> default="")
> (options, args) = parser.parse_args()
> preLogConfigStrs = ["after parse_args, args = " + pprint.pformat(args),
> "after parse_args, options = " + pprint.pformat(options),
> "after parse_args, vars(options) = " + pprint.pformat(vars(options)),
> "after parse_args, sys.argv = " + pprint.pformat(sys.argv)]
>
> #some code omitted
>
> logger.info("Using AGENT_WORK_ROOT = " + options.root_folder)
> logger.info("Using AGENT_LOG_ROOT = " + options.log_folder)
> logger.info("logFile = " + repr(logFile))
> logger.info("Dumping data to log acquired before logging configuration
> was complete")
> for str in preLogConfigStrs:
> logger.info(str)
>
> Further inspection of the failed containers launching jmemcached, shows
> that the command line arguments have the
>
> INFO 2017-04-27 21:58:40,285 main.py:97 - Newloglevel=logging.DEBUG
> INFO 2017-04-27 21:58:40,285 main.py:260 - Using AGENT_WORK_ROOT =
> /var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/root/
> appcache/application_1493330089109_0001/container_1493330089
> 109_0001_01_000002
> INFO 2017-04-27 21:58:40,285 main.py:261 - Using AGENT_LOG_ROOT =
> /var/log/hadoop-yarn/containers/application_1493330089109_
> 0001/container_1493330089109_0001_01_000002
> INFO 2017-04-27 21:58:40,285 main.py:262 - logFile =
> '/var/log/hadoop-yarn/containers/application_1493330089109_
> 0001/container_1493330089109_0001_01_000002/./slider-agent.log'
> INFO 2017-04-27 21:58:40,285 main.py:263 - Dumping data to log acquired
> before logging configuration was complete
> INFO 2017-04-27 21:58:40,285 main.py:265 - after parse_args, args = []
> INFO 2017-04-27 21:58:40,285 main.py:265 - after parse_args, options =
> <Values at 0x2bde2d8: {'debug': '', 'zk_quorum': 'localhost:2181',
> 'zk_reg_path': '/registry/users/root/services
> /org-apache-slider/jmemcached', 'verbose': False, 'label':
> 'container_1493330089109_0001_01_000002___MEMCACHED'}>
> INFO 2017-04-27 21:58:40,285 main.py:265 - after parse_args, vars(options)
> = {'debug': '',
> 'label': 'container_1493330089109_0001_01_000002___MEMCACHED',
> 'verbose': False,
> 'zk_quorum': 'localhost:2181',
> 'zk_reg_path': '/registry/users/root/services
> /org-apache-slider/jmemcached'}
> INFO 2017-04-27 21:58:40,285 main.py:265 - after parse_args, sys.argv =
> ['./infra/agent/slider-agent/agent/main.py',
> '--label',
> 'container_1493330089109_0001_01_000002___MEMCACHED',
> '--zk-quorum',
> 'localhost:2181',
> '--zk-reg-path',
> '/registry/users/root/services/org-apache-slider/jmemcached']
>
>
> I'm still trying to get to the bottom of this, any ideas of what should be
> done next?
>
>
> With best regards:
>
>
> Bill
>
