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Posted to yarn-dev@hadoop.apache.org by "Andras Gyori (Jira)" <ji...@apache.org> on 2021/11/29 10:24:00 UTC

[jira] [Created] (YARN-11020) [UI2] No container is found for an application attempt with a single AM container

Andras Gyori created YARN-11020:
-----------------------------------

             Summary: [UI2] No container is found for an application attempt with a single AM container
                 Key: YARN-11020
                 URL: https://issues.apache.org/jira/browse/YARN-11020
             Project: Hadoop YARN
          Issue Type: Bug
          Components: resourcemanager
            Reporter: Andras Gyori
            Assignee: Andras Gyori


In UI2 for an application under the Logs tab, No container data available message is shown if the application attempt only submitted a single container (which is the AM container). 

The culprit of the issue is that the response from YARN is not consistent, because for a single container it looks like:
{noformat}
{
    "containerLogsInfo": {
        "containerLogInfo": [
            {
                "fileName": "prelaunch.out",
                "fileSize": "100",
                "lastModifiedTime": "Mon Nov 29 09:28:16 +0000 2021"
            },
            {
                "fileName": "directory.info",
                "fileSize": "2296",
                "lastModifiedTime": "Mon Nov 29 09:28:16 +0000 2021"
            },
            {
                "fileName": "stderr",
                "fileSize": "1722",
                "lastModifiedTime": "Mon Nov 29 09:28:28 +0000 2021"
            },
            {
                "fileName": "prelaunch.err",
                "fileSize": "0",
                "lastModifiedTime": "Mon Nov 29 09:28:16 +0000 2021"
            },
            {
                "fileName": "stdout",
                "fileSize": "0",
                "lastModifiedTime": "Mon Nov 29 09:28:16 +0000 2021"
            },
            {
                "fileName": "syslog",
                "fileSize": "38551",
                "lastModifiedTime": "Mon Nov 29 09:28:28 +0000 2021"
            },
            {
                "fileName": "launch_container.sh",
                "fileSize": "5013",
                "lastModifiedTime": "Mon Nov 29 09:28:16 +0000 2021"
            }
        ],
        "logAggregationType": "AGGREGATED",
        "containerId": "container_1638174027957_0008_01_000001",
        "nodeId": "da175178c179:43977"
    }
}{noformat}
As for applications with multiple containers it looks like:
{noformat}
{
    "containerLogsInfo": [{
        ....
    }, { .... }]
}{noformat}
We can not change the response of the endpoint due to backward compatibility, therefore we need to make UI2 be able to handle both scenarios.



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