Support Questions

obaid_salikeen · ‎12-18-2016

Hi,

I have written a ReportingTask service for Nifi, where I use 'BulletinRepository.findBulletins(queryProcessor);' to retrieve all bulletins and report metrics regarding number of errors/warns/info. The issue is that I am receiving at-max 5 bulletins/messages per component though more messages are viewable through the Bulletin UI.

Following is how I construct and execute my query:

BulletinRepository repository =  context.getBulletinRepository();
final BulletinQuery queryProcessor= new BulletinQuery.Builder().
		sourceType(ComponentType.PROCESSOR).
		limit(500).build();
bulletinsList.addAll(repository.findBulletins(queryProcessor));

How do I get ALL the messages from Bulletin repository rather then just receiving 5?

Thanks

Obaid

TimothySpann · ‎12-18-2016

Here is your answer:

public class VolatileBulletinRepository implements BulletinRepository {

private static final int CONTROLLER_BUFFER_SIZE = 10;

private static final int COMPONENT_BUFFER_SIZE = 5;

The limit for bulletins returned is set by the component buffer, which is hard coded to 5.

https://github.com/apache/nifi/blob/d838f61291d2582592754a37314911b701c6891b/nifi-nar-bundles/nifi-f...

https://github.com/apache/nifi/blob/7f5eabd603bfc326dadc35590bbe69304e8c90fa/nifi-nar-bundles/nifi-f...

I am not sure who is setting that limit, but that may be 5 somewhere.

final BulletinQuery.Builder queryBuilder = new BulletinQuery.Builder()

.groupIdMatches(query.getGroupId())

.sourceIdMatches(query.getSourceId())

.nameMatches(query.getName())

.messageMatches(query.getMessage())

.after(query.getAfter())

.limit(query.getLimit());

// perform the query

final List<Bulletin> results = bulletinRepository.findBulletins(queryBuilder.build());

https://github.com/apache/nifi/blob/2d6bba080f90a45a9f4149f6844f452150ed6bc1/nifi-nar-bundles/nifi-f...

@QueryParam("limit") IntegerParameterlimit) throwsInterruptedException {

Have you traced it. Maybe 500 is too big.

View solution in original post

mgilman · ‎12-20-2016

If the processor in question is only running every 10 seconds, I would suggest running the Reporting Task more frequently. However, if a single invocation of the processor will result in more than 5 bulletins, I think your going to have trouble capturing them all with this approach. Scrapping the logs may be your safest bet.

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Support Questions

Nifi - BulletinRepository API returns maximum 5 bulletins (errors/info/warn) per component