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From Jayesh Thakrar <j_thak...@yahoo.com>
Subject Re: Kafka broker metrics not appearing in REST API
Date Wed, 13 May 2015 14:23:43 GMT
Hi Sid,
Your question below about "something wrong on the Kafka Sink side" triggered a train of thought !I know as part of customizing Kafka in Ambari, I had set the JMX_PORT to an arbitrary port (54320).Before turning to Ambari for our Kafka solution, I had a home-grown solution of extracting metrics from each broker via JMX and sending it to TSDB.And looking at AMBARI-9185 and seeing the way Kafka metrics are collected using com.yammer package, I now suspected that Ambari could be failing in getting metrics because of this.So I removed my customized port and voila, got the metrics !
Thank you very much for your perseverance and help throughout this thread.
A good lesson learnt. And also along the way, I learnt to practice to move the metrics collector (remove and install) via the REST API.I think I have found an issue though, so will log it in Jira.
Best regards,Jayesh

      From: Siddharth Wagle <swagle@hortonworks.com>
 To: Jayesh Thakrar <j_thakrar@yahoo.com> 
Cc: "user@ambari.apache.org" <user@ambari.apache.org>; Sriharsha Chintalapani <schintalapani@hortonworks.com> 
 Sent: Tuesday, May 12, 2015 5:12 PM
 Subject: Re: Kafka broker metrics not appearing in REST API
   
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-- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837  -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837  -- -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 Hi Jayesh,
Are you able to see metrics on dashboard / hosts page ?If that is true, I wonder if something is wrong on the Kafka Sink side.

-Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Tuesday, May 12, 2015 2:15 PM
To: Siddharth Wagle
Subject: Re: Kafka broker metrics not appearing in REST API Hi Sid,
Just an update - I was able to install Metrics Collector on another server and have it started.However the issue did not go away (i.e. I still cannot get Kafka metrics - and these are critical for us).
But on the bright side, installing and removing components was a breeze - easier than I was expecting it to be (hence I did not do it first thing on Monday!).During the install via REST API, the UI updated immediately. The install was taking some time (don't know why), but I had a drop-down option to "reinstall" which i did and it was all complete.But this was very impressive !
Also encountered AMBARI-4337 along the way, but the overall experience was very positive. Good job by the whole Ambari team!
Best regards,Jayesh

From: Siddharth Wagle <swagle@hortonworks.com>
To: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Friday, May 8, 2015 5:18 PM
Subject: Re: Kafka broker metrics not appearing in REST API

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{margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 Yes if you point you can just point to a new data dir and start fresh.
Monitors use this file to find collector:/etc/ambari-metrics-monitor/conf/metric_monitor.ini

You can just change value on the hosts and restart them in one shot.
I need to flush out lot more details here, will do it in the following week:https://cwiki.apache.org/confluence/display/AMBARI/Metrics

BR,Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Friday, May 08, 2015 12:40 PM
To: Siddharth Wagle
Subject: Re: Kafka broker metrics not appearing in REST API Hi Sid,
Thanks for getting back !
That's a good idea.I was thinking about that for the past 2 days, but I want to really "start from a clean slate".So can I not even move the data under "hbase.rootdir" and the metrics collector checkpoint info?That way, I can ensure that I have no baggage from the the prior metrics collector?
Ofcourse, to be complete, I will shutdown metrics monitors across all nodes first. BTW - the API link still seems to be Ambari 1.7 specific, since it talks about Nagios.
Let me know if I can "discard" the old baggage from the current collector.I don't mind loosing the metrics data since I am interested in the Kafka related metrics the most.
Thanks again,Jayesh

From: Siddharth Wagle <swagle@hortonworks.com>
To: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Friday, May 8, 2015 2:28 PM
Subject: Re: Kafka broker metrics not appearing in REST API

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-- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 Hi Jayesh,
Did you give some thought to isolating management and monitoring from the rest of the cluster used for high volume I/O ? This would be fairly quick and pain free solution.

Ambari Metrics node doesn't have to be on high I/O bound nodes right? It needs 1 disk and 4 - 6 GB RAM.
Moving Metrics Collector can be achieved through API calls:https://cwiki.apache.org/confluence/display/AMBARI/Add+a+host+and+deploy+components+using+APIs

The calls to add host component (on the wiki) can be used to delete.
Steps:0. Add new host if needed.
1. Stop AMS2. Provision node and move the data from location at "hbase.rootdir"3. Delete Metrics Collector from existing host.4. Add Metric Collector to the new host.

BR,
Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Friday, May 08, 2015 11:42 AM
To: Siddharth Wagle
Subject: Re: Kafka broker metrics not appearing in REST API Hi Sid,
I was wondering if you have any pointers for the issue.
Thanks,Jayesh
From: Jayesh Thakrar <j_thakrar@yahoo.com>
To: Siddharth Wagle <swagle@hortonworks.com>
Sent: Thursday, May 7, 2015 9:12 PM
Subject: Re: Kafka broker metrics not appearing in REST API

Hi Sid,
First of all thank you for devoting so much of your time to this issue.Yes, I agree that the I/O performance is not ideal.The reason is that we have a RAID-5 setup of 12 0.5TB drives (= about 500 GB filesystem space) which is used for flume, Kafka, Ambari and logs.
I will work on getting kafka off the server (but flume will remain, as this cluster/hardware is primarily for flume).We flume in 90+ billion log lines a day through this 30-node cluster (and landing that data onto two different Hadoop clusters), so its non-trivial load, but not substantial.
As for memory settings, it is 1536 MB for each of collector, master and regionserver processes.
Thanks,jayesh



From: Siddharth Wagle <swagle@hortonworks.com>
To: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 7, 2015 5:22 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 p {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 I see lot of disk contention, haven't had time to look thoroughly but here is an example of slow write:
2015-05-07 19:34:52,775 INFO  [RS:0;dtord01flm03p:40558-smallCompactions-1431008112083] regionserver.HStore: Completed compaction of 5 file(s) in 0 of METRIC_RECORD,,1429966316307.947cfa22f884d035c09fe804b1f5402c. into dbf4e3c2520a4c1cb0df49950fbf4f3d(size=778.0 M), total size for store is 2.2 G. This selection was in queue for 0sec, and took 1mins, 40sec to execute

On a 30 node host, you could potentially place Ambari server and Metrics Collector on the same host but without other disk bound components like Flume / KAFKA broker?
Also, what are memory settings for the Metrics Collector HBase? (ams-hbase-env)
-Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 07, 2015 12:49 PM
To: Siddharth Wagle
Subject: Re: Kafka broker metrics not appearing in REST API Sorry, here are the log files again.
Thanks,Jayesh

From: Siddharth Wagle <swagle@hortonworks.com>
To: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 7, 2015 2:44 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 This is still only the collector log. HBase log is in the same directory but a different file.


From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 07, 2015 11:54 AM
To: Siddharth Wagle
Subject: Re: Kafka broker metrics not appearing in REST API Sure - just sending it to you directly to avoid being filtered by Apache mailers.

From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 7, 2015 1:48 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 Don't see it, could you please resend?
BR,Sid


From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 07, 2015 11:37 AM
To: user@ambari.apache.org
Subject: Re: Kafka broker metrics not appearing in REST API Yes, I did send it in the earlier post.let me know if you don't get it.
Thanks,jayesh
From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 7, 2015 1:35 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 My mistake that is just my hostname.
Could you attach?
/var/log/ambari-metrics-collector/hbase-ams-master*.log




From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 07, 2015 11:18 AM
To: user@ambari.apache.org
Subject: Re: Kafka broker metrics not appearing in REST API Sorry, took a while - was away.
I don't have the "enhanced-dashboard" file, but am attaching the following -ambari-metrics-collector/ambari-metrics-collector.logambari-metrics-collector/ambari-metrics-collector.out
Thanks,Jayesh
From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 7, 2015 11:45 AM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 What is the memory setting in amb-hbase-env for master and regionserver?
Could you post /var/log/ambari-metrics-collector/hbase-ams-master-enhanced-dashboard-3.logand/var/log/ambari-metrics-collector/ambari-metrics-collector.log

on this thread?
BR,Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Thursday, May 07, 2015 8:33 AM
To: user@ambari.apache.org; Jayesh Thakrar
Subject: Re: Kafka broker metrics not appearing in REST API Hi Harsha and Sid,
So I was able to increase the memory for the metrics-collector and for the hbase master from 512 MB to 1500 MB.The metrics collector then restarted without any issues (I think that may have fixed any instability I had earlier).Immediately after the restart, I was able to get Kafka metrics a few times - and then they disappeared again.
Can you point me to anything to the codepath/logs that is involved with satisfying the REST API for components?I looked at the logs in /var/log/ambari-server/ambari-server.log, but there was nothing that can help with this issue.
Greatly appreciate your help,Thanks,Jayesh

From: Jayesh Thakrar <j_thakrar@yahoo.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>
Sent: Wednesday, May 6, 2015 11:49 PM
Subject: Re: Kafka broker metrics not appearing in REST API

Thanks Sid.I had trouble restarting the metrics collector.Somehow it was complaining about not being able to connect to the HBase embedded zookeeper on port 61181.Anyway, after a few tries I was able to bring it up.I had brought down the whole metrics collection system - and just completed a rolling restart of the metrics collector.
After all the above I am back to the same reproducible situation of no Kafka metrics.
However I examined the servers on the cluster and apparently there is not sufficient free RAM - or should I say a lot of it is used by filesystem buffer/caching (15 GB or 30%). This is not surprising as both Flume and Kafka are heavy on (sequential) I/O.
I will need to "resolve" this situation before I can increase memory for HBase.
But all the same, thanks for the pointers - this has give me enough things to look into.
[root@dtord01flm01p ~]# free -m             total       used       free     shared    buffers     cachedMem:         48251      47657        593         32          4      32417-/+ buffers/cache:      15235      33015Swap:         8191          0       8191




From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; "user@ambari.apache.org" <user@ambari.apache.org>
Sent: Wednesday, May 6, 2015 11:31 PM
Subject: Re: Kafka broker metrics not appearing in REST API

Is this or can this be writing to its own disk? 
Can you look at the hbase regionserver web ui, in your browser key in the http://metric-collrctor-host:61310.
This the hbase master info port.Click on the link to regionserver. Look at Queues and the block cache stats.
Queues should be empty for majority of the time, lets say when u refresh page a few times. If not, this points to disk io bottleneck.
Cache hit ratio as i have observed this is around 70%, more the better.
Do you have available physical memory on that box? If yes, the hbase master heap size in ams-hbase-env and the metric collector heap size in ams-env should be bumped up. Default is 512m in both cases.
Sid


Sent by Outlook for Android





On Wed, May 6, 2015 at 9:16 PM -0700, "Jayesh Thakrar"<j_thakrar@yahoo.com> wrote:

Here's the embedded HBase data dir size.
[jthakrar@dtord01flm03p data]$ pwd/localpart0/ambari-metrics-collector/hbase/data
[jthakrar@dtord01flm03p data]$ du -xhs *14G     default72K     hbase



From: Siddharth Wagle <swagle@hortonworks.com>
To: "j_thakrar@yahoo.com" <j_thakrar@yahoo.com>; "user@ambari.apache.org" <user@ambari.apache.org>
Sent: Wednesday, May 6, 2015 11:00 PM
Subject: Re: Kafka broker metrics not appearing in REST API

We have tested the embeded mode to work with upto 400 node cluster and multiple services running on it.
You can change the hbase.rootdir in ams-hbase-site and possibly write to partition with separate disk mount.
And copy over the data from existing location. It would be good to know what is the size of data written to hbase.rootdir to get an idea of what kind of write volume are we looking at. 
Sid

Sent by Outlook for Android





On Wed, May 6, 2015 at 8:52 PM -0700, "Jayesh Thakrar"<j_thakrar@yahoo.com> wrote:

We have a 30-node cluster.Unfortunately, this is also our production cluster and there's no HDFS as it is a dedicated Flume cluster.We have installed Ambari + Storm + Kafka (HDP) on a cluster on which we have production data being flumed.The flume data is being sent to an HDFS cluster which is a little overloaded, so we want to send flume data to Kafka and then "throttle" the data being loaded into the HDFS cluster.
But you have given me an idea - maybe I can setup a new HBase file location so that I can do away with HBase data corruption, if any.
It will take me some time to do that, will let you know once I have tried it out.
Thanks,jayesh

From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Wednesday, May 6, 2015 10:42 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 --P {margin-top:0;margin-bottom:0;}#yiv1498390837 How big is your cluster in terms of number of nodes?You can tune settings for HBase based on cluster size.
Following are the instructions for writing metrics to HDFS instead of local FS.
ams-site::: timeline.metrics.service.operation.mode = distributed
ams-hbase-site:::hbase.rootdir = hdfs://<namenode-host>:8020/amshbasehbase.cluster.distributed = true
-Sid



From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Wednesday, May 06, 2015 8:30 PM
To: user@ambari.apache.org; Siddharth Wagle; Jayesh Thakrar
Subject: Re: Kafka broker metrics not appearing in REST API More info....
I was doing some "stress-testing" and interestingly, the Metrics Collector crashed 2 times and I had to restart it (don't like a file-based HBase for the metrics collector, but not very confident of configuring the system to point to an existing HBase cluster).
Also, after this email thread, I looked up  the metrics collector logs and see errors like this -
METRIC_RECORD' at region=METRIC_RECORD,,1429966316307.947cfa22f884d035c09fe804b1f5402c., hostname=dtord01flm03p.dc.dotomi.net,60455,1429737430103, seqNum=24393013:09:37,619  INFO [phoenix-1-thread-349921] RpcRetryingCaller:129 - Call exception, tries=11, retries=35, started=835564 ms ago, cancelled=false, msg=row 'kafka.network.RequestMetrics.Metadata-RequestsPerSec.1MinuteRate^@dtord01flm27p.dc.dotomi.net^@^@^@^AL��:�kafka_broker' on table 'METRIC_RECORD' at region=METRIC_RECORD,kafkark.RequestMetrics.Metadata-RequestsPerSec.1MinuteRate\x00dtord01flm27p.dc.dotomi.net\x00\x00\x00\x01L\xED\xED:\xE5kafka_broker,1429966316307.d488f5e58d54c3251cb81fdfa475dd45., hostname=dtord01flm03p.dc.dotomi.net,60455,1429737430103, seqNum=24393113:10:58,082  INFO [phoenix-1-thread-349920] RpcRetryingCaller:129 - Call exception, tries=12, retries=35, started=916027 ms ago, cancelled=false, msg=row '' on table 'METRIC_RECORD' at region=METRIC_RECORD,,1429966316307.947cfa22f884d035c09fe804b1f5402c., hostname=dtord01flm03p.dc.dotomi.net,60455,1429737430103, seqNum=24393013:10:58,082  INFO [phoenix-1-thread-349921] RpcRetryingCaller:129 - Call exception, tries=12, retries=35, started=916027 ms ago, cancelled=false, msg=row 'kafka.network.RequestMetrics.Metadata-RequestsPerSec.1MinuteRate^@dtord01flm27p.dc.dotomi.net^@^@^@^AL��:�kafka_broker' on table 'METRIC_RECORD' at region=METRIC_RECORD,kafkark.RequestMetrics.Metadata-RequestsPerSec.1MinuteRate\x00dtord01flm27p.dc.dotomi.net\x00\x00\x00\x01L\xED\xED:\xE5kafka_broker,1429966316307.d488f5e58d54c3251cb81fdfa475dd45., hostname=dtord01flm03p.dc.dotomi.net,60455,1429737430103, seqNum=24393113:10:58,112 ERROR [Thread-25] TimelineMetricAggregator:221 - Exception during aggregating metrics.org.apache.phoenix.exception.PhoenixIOException: org.apache.phoenix.exception.PhoenixIOException: Failed after attempts=36, exceptions:Sat Apr 25 13:10:58 UTC 2015, null, java.net.SocketTimeoutException: callTimeout=900000, callDuration=938097: row '' on table 'METRIC_RECORD' at region=METRIC_RECORD,,1429966316307.947cfa22f884d035c09fe804b1f5402c., hostname=dtord01flm03p.dc.dotomi.net,60455,1429737430103, seqNum=243930
        at org.apache.phoenix.util.ServerUtil.parseServerException(ServerUtil.java:107)        at org.apache.phoenix.iterate.ParallelIterators.getIterators(ParallelIterators.java:527)        at org.apache.phoenix.iterate.MergeSortResultIterator.getIterators(MergeSortResultIterator.java:48)        at org.apache.phoenix.iterate.MergeSortResultIterator.minIterator(MergeSortResultIterator.java:63)        at org.apache.phoenix.iterate.MergeSortResultIterator.next(MergeSortResultIterator.java:90)        at org.apache.phoenix.iterate.MergeSortTopNResultIterator.next(MergeSortTopNResultIterator.java:87)        at org.apache.phoenix.jdbc.PhoenixResultSet.next(PhoenixResultSet.java:739)        at org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.TimelineMetricAggregator.aggregateMetricsFromResultSet(TimelineMetricAggregator.java:104)        at org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.TimelineMetricAggregator.aggregate(TimelineMetricAggregator.java:72)        at org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.AbstractTimelineAggregator.doWork(AbstractTimelineAggregator.java:217)        at org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.AbstractTimelineAggregator.runOnce(AbstractTimelineAggregator.java:94)        at org.apache.hadoop.yarn.server.applicationhistoryservice.metrics.timeline.AbstractTimelineAggregator.run(AbstractTimelineAggregator.java:70)


From: Jayesh Thakrar <j_thakrar@yahoo.com>
To: Siddharth Wagle <swagle@hortonworks.com>; "user@ambari.apache.org" <user@ambari.apache.org>
Sent: Wednesday, May 6, 2015 10:07 PM
Subject: Re: Kafka broker metrics not appearing in REST API

Hi Siddharth,
Yes, I am using Ambari 2.0 with Ambari Metrics service.The interesting thing is that I got them for some time and not anymore.And I also know that the metrics are being collected since i can see them on the dashboard.Any pointer for troubleshooting?
And btw, it would be nice to have a count of messages received and not a computed metric count / min.TSDB does a good job of giving me cumulative and rate-per-sec graphs and numbers.
Thanks in advance,Jayesh


From: Siddharth Wagle <swagle@hortonworks.com>
To: "user@ambari.apache.org" <user@ambari.apache.org>; Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Wednesday, May 6, 2015 10:03 PM
Subject: Re: Kafka broker metrics not appearing in REST API

#yiv1498390837 #yiv1498390837 -- -- -- -- -- -- -- -- -- -- -- --P {margin-top:0;margin-bottom:0;}#yiv1498390837 Hi Jayesh,
Are you using Ambari 2.0 with Ambari Metrics service?
BR,Sid


From: Jayesh Thakrar <j_thakrar@yahoo.com>
Sent: Wednesday, May 06, 2015 7:53 PM
To: user@ambari.apache.org
Subject: Kafka broker metrics not appearing in REST API Hi,
I have installed 2 clusters with Ambari and Storm and Kafka.After the install, I was able to get metrics for both Storm and Kafka via REST API.This worked fine for a week, but since the past 2 days, I have not been getting Kafka metrics.
I need the metrics to push to an OpenTSDB cluster.I do get host metrics and Nimbus metrics but not KAFKA_BROKER metrics.

I did have maintenance turned on for some time, but maintenance is turned off now.
[jthakrar@dtord01hdp0101d ~]$ curl --user admin:admin 'http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/NIMBUS?fields=metrics'{  "href" : "http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/NIMBUS?fields=metrics",  "ServiceComponentInfo" : {    "cluster_name" : "ord_flume_kafka_prod",    "component_name" : "NIMBUS",    "service_name" : "STORM"  },  "metrics" : {    "storm" : {      "nimbus" : {        "freeslots" : 54.0,        "supervisors" : 27.0,        "topologies" : 0.0,        "totalexecutors" : 0.0,        "totalslots" : 54.0,        "totaltasks" : 0.0,        "usedslots" : 0.0      }    }  }}
[jthakrar@dtord01hdp0101d ~]$ curl --user admin:admin 'http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/KAFKA_BROKER?fields=metrics'{  "href" : "http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/KAFKA_BROKER?fields=metrics",  "ServiceComponentInfo" : {    "cluster_name" : "ord_flume_kafka_prod",    "component_name" : "KAFKA_BROKER",    "service_name" : "KAFKA"  }}
[jthakrar@dtord01hdp0101d ~]$ curl --user admin:admin 'http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/SUPERVISOR?fields=metrics'{  "href" : "http://dtord01flm01p:8080/api/v1/clusters/ord_flume_kafka_prod/components/SUPERVISOR?fields=metrics",  "ServiceComponentInfo" : {    "cluster_name" : "ord_flume_kafka_prod",    "component_name" : "SUPERVISOR",    "service_name" : "STORM"  }






























  
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