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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