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https://issues.apache.org/jira/browse/YARN-5094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15294486#comment-15294486
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Li Lu commented on YARN-5094:
-----------------------------
OK, seems like we missed something here: We use the incoming container event's
timestamp as our event timestamp. However, {{ContainerEvent}} does not contain
valid event timestamp since it's created via AbstractEvent(type), where
timestamp is always set to -1:
{code}
// use this if you DON'T care about the timestamp
public AbstractEvent(TYPE type) {
this.type = type;
// We're not generating a real timestamp here. It's too expensive.
timestamp = -1L;
}
{code}
However, we do have the timestamp in RM SMP. This caused the difference.
I'm working on a fix now... Probably we need to add timestamp support to
{{ContainerEvent}}s so that we can use this information?
> some YARN container events have timestamp of -1 in REST output
> --------------------------------------------------------------
>
> Key: YARN-5094
> URL: https://issues.apache.org/jira/browse/YARN-5094
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Li Lu
> Labels: yarn-2928-1st-milestone
>
> Some events in the YARN container entities have timestamp of -1. The
> RM-generated container events have proper timestamps. It appears that it's
> the NM-generated events that have -1: YARN_CONTAINER_CREATED,
> YARN_CONTAINER_FINISHED, YARN_NM_CONTAINER_LOCALIZATION_FINISHED,
> YARN_NM_CONTAINER_LOCALIZATION_STARTED.
> In the YARN container page,
> {noformat}
> {
> id: "YARN_CONTAINER_CREATED",
> timestamp: -1,
> info: { }
> },
> {
> id: "YARN_CONTAINER_FINISHED",
> timestamp: -1,
> info: {
> YARN_CONTAINER_EXIT_STATUS: 0,
> YARN_CONTAINER_STATE: "RUNNING",
> YARN_CONTAINER_DIAGNOSTICS_INFO: ""
> }
> },
> {
> id: "YARN_NM_CONTAINER_LOCALIZATION_FINISHED",
> timestamp: -1,
> info: { }
> },
> {
> id: "YARN_NM_CONTAINER_LOCALIZATION_STARTED",
> timestamp: -1,
> info: { }
> }
> {noformat}
> I think the data itself is OK, but the values are not being populated in the
> REST output?
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