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From Siddharth Wagle <swa...@hortonworks.com>
Subject Re: Kafka broker metrics not appearing in REST API
Date Thu, 07 May 2015 03:42:08 GMT
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/amshbase

hbase.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=243930
13:09:37,619  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=243931
13:10:58,082  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=243930
13:10:58,082  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=243931
13:10:58,112 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

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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