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Posted to issues@flink.apache.org by "Zhu Zhu (Jira)" <ji...@apache.org> on 2020/01/02 10:28:00 UTC
[jira] [Commented] (FLINK-15448) Log host informations for
TaskManager failures.
[ https://issues.apache.org/jira/browse/FLINK-15448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17006721#comment-17006721 ]
Zhu Zhu commented on FLINK-15448:
---------------------------------
TBH, I think it's not very necessary to add the host to each log line that contains a ResourceID as long as we can easily find the host of a container in the same log file. This also makes the log file larger due to redundancy.
> Log host informations for TaskManager failures.
> -----------------------------------------------
>
> Key: FLINK-15448
> URL: https://issues.apache.org/jira/browse/FLINK-15448
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.9.1
> Reporter: Victor Wong
> Priority: Minor
>
> With Flink on Yarn, sometimes we ran into an exception like this:
> {code:java}
> java.util.concurrent.TimeoutException: The heartbeat of TaskManager with id container_xxxx timed out.
> {code}
> We'd like to find out the host of the lost TaskManager to log into it for more details, we have to check the previous logs for the host information, which is a little time-consuming.
> Maybe we can add more descriptive information to ResourceID of Yarn containers, e.g. "container_xxx@host_name:port_number".
> Here's the demo:
> {code:java}
> class ResourceID {
> final String resourceId;
> final String details;
> public ResourceID(String resourceId) {
> this.resourceId = resourceId;
> this.details = resourceId;
> }
> public ResourceID(String resourceId, String details) {
> this.resourceId = resourceId;
> this.details = details;
> }
> public String toString() {
> return details;
> }
> }
> // in flink-yarn
> private void startTaskExecutorInContainer(Container container) {
> final String containerIdStr = container.getId().toString();
> final String containerDetail = container.getId() + "@" + container.getNodeId();
> final ResourceID resourceId = new ResourceID(containerIdStr, containerDetail);
> ...
> }
> {code}
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