SAP Exam E_C4HYCP_12 Topic 3 Question 33 Discussion

Actual exam question for SAP's E_C4HYCP_12 exam

Question #: 33
Topic #: 3

You see the following entry in the thread dumps while analyzing a system's performance:ajp-8019- 43" nid=183 state=WAITING - waiting on <0x515a41f6> (a org.apache.tomcat.util.net.JIoEndpoint$Worker) - locked <0x515a41f6> (a org.apache.tomcat.util.net.JioEndpoint$Worker)at java.lang.Object.wait(Native Method)at java.lang.Object.wait(Object.java :485)at org.apache.tomcat.util.net.JioEndpoint$Worker.await(JioEndpoint.java :471)at org.apache.tomcat.util.net.JioEndpoint$Worker.run(JioEndpoint.java :497)at java.lang.Thread.run(Thread.java:662)Locked synchronizers: count = 0 How do you interpret this thread dump?

AThe Tomcat AJP parameter maxThreads is too small to handle simultaneous requests.

BThe JVM option maxAJPThreads is too small to handle simultaneous requests.

CThe thread is waiting for an incoming connection.

DThe system is about to crash because the thread is blocked and cannot perform its job.
The thread dump entry indicates that the thread is waiting for an incoming connection. The thread is part of the AJP connector, which communicates with a web connector via the AJP protocol. The thread is in a WAITING state, which means that it is waiting for another thread to perform an action. The thread is waiting on an object of type org.apache.tomcat.util.net.JIoEndpoint$Worker, which represents a worker thread that processes incoming requests.The thread dump entry does not imply that the Tomcat AJP parameter maxThreads is too small, that the JVM option maxAJPThreads is too small, or that the system is about to crash. Reference:1

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Suggested Answer: C

by Devora at Mar 04, 2024, 09:10 AM

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Jerry

8 months ago

Exactly, the thread is indeed waiting for an incoming connection.

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Kris

8 months ago

So, the correct interpretation would be option C then?

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Lenny

8 months ago

Yes, because the thread dump doesn't suggest that the parameters are too small.

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Celeste

8 months ago

So, does that mean option A and B are incorrect?

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Jerry

8 months ago

Agreed, it seems like the thread is part of the AJP connector.

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Lenny

8 months ago

I think the thread is waiting for an incoming connection.

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Lashandra

8 months ago

I love a good thread dump! This one seems pretty straightforward - the thread is in a waiting state, probably because it's dealing with a sudden influx of requests. No need to sound the alarms just yet. Let's keep an eye on it and see if the situation improves.

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Herminia

7 months ago

No need to sound the alarms just yet, let's keep an eye on it.

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Kattie

8 months ago

The thread is part of the AJP connector.

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Gearldine

8 months ago

The thread is waiting for an incoming connection.

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Tijuana

8 months ago

Exactly, the thread is waiting on another thread to perform an action.

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Meaghan

8 months ago

I believe the system is not about to crash, as the thread is just blocked.

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Bette

8 months ago

Ha! Blocked threads and crashes, that's the stuff of nightmares. But this doesn't look too bad - the thread is just waiting patiently for something to do. As long as it's not stuck in an infinite loop or anything, I'd say this is pretty routine.

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Lon

7 months ago

Cherrie: As long as it's not causing a crash, we're good.

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Cherrie

8 months ago

It's not too bad, just waiting for an incoming connection.

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Raylene

8 months ago

Yeah, blocked threads can be a real headache.

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Lashawna

8 months ago

No, the thread dump entry does not imply that.

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Jerry

9 months ago

So, it's not related to the Tomcat AJP parameter maxThreads being too small?

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Tijuana

9 months ago

Yes, the thread dump entry indicates that.

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Ozell

9 months ago

Hmm, I'm not sure the maxThreads or maxAJPThreads settings are the issue here. The thread seems to be in a normal waiting state, just waiting for work to do. Maybe we could look into increasing the thread pool size if this is a recurring problem, but I wouldn't jump to any conclusions yet.

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Gayla

8 months ago

Increasing the thread pool size could be a solution if this happens often.

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Vicky

8 months ago

The thread is just waiting for an incoming connection.

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Viola

9 months ago

This thread dump looks like the system is just handling a lot of concurrent requests, no need to panic. The thread is just waiting for an incoming connection, which is normal behavior.

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Jesusita

8 months ago

The thread is waiting on an object of type org.apache.tomcat.util.net.JIoEndpoint$Worker, which represents a worker thread that processes incoming requests.

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