Young Chen created YARN-8895:
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Summary: Improve YARN
Key: YARN-8895
URL: https://issues.apache.org/jira/browse/YARN-8895
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Young Chen
Assignee: Young Chen
Currently identifying error sources can be quite difficult, as they are written
into an unstructured string "diagnostics" field. This is present in container
statuses returned to the RM and in application attempts in the RM. These errors
are difficult to classify without hard-coding diagnostic string searches.
This Jira aims to add a structured error field in NM and RM that preserves
failure information and source component to enable faster and clearer error
diagnosis.
Old error:
E.g.:
Application application_1539325316309_0001 failed 1 times due to AM Container
for appattempt_1539325316309_0001_000001 exited with exitCode: 57005
For more detailed output, check application tracking
page:http://XXXXXXXX:80/cluster/app/application_1539325316309_0001Then, click
on links to logs of each attempt.
Diagnostics: Container exited with a non-zero exit code 57005
Failing this attempt. Failing the application.
Proposed new error example:
{code:java}
{"errors":[{"errorId":"E_SYSTEM_AM_AMCRASHED",
"name":"AM_CRASHED","severity":"Error",
"component":"AM",
"source":"System",
"exitType":"CONTAINER_FINISHED","containerStatus":57005,
"description":"Application attempt appattempt_1539325316309_0001_000001
encountered an error",
"helpLink":"http://XXXXXXXXXXX:80/proxy/application_1539325316309_0001/"}]}
{code}
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