Broker
configs:===========broker.id=36num.network.threads=3num.io.threads=8socket.send.buffer.bytes=102400socket.receive.buffer.bytes=102400socket.request.max.bytes=104857600log.dirs=/var/log/kafkanum.partitions=1num.recovery.threads.per.data.dir=1offsets.topic.replication.factor=1transaction.state.log.replication.factor=1transaction.state.log.min.isr=1log.retention.hours=168log.segment.bytes=1073741824log.retention.check.interval.ms=300000zookeeper.connect=myserver1:2181,myserver2:2181,myserver3:2181zookeeper.connection.timeout.ms=6000confluent.support.metrics.enable=trueconfluent.support.customer.id=anonymousgroup.initial.rebalance.delay.ms=0auto.create.topics.enable=false
Topic configs:==========--partitions 15--replication-factor
3retention.ms=31449600000retention.bytes=10737418240
As you can see, I have tried to override the retention.bytes for each partition
to 10GB to be explicit. 96GB over 10 partitions which 6.4GB. So, I gave myself
more than enough buffer. Even then, I am left with no logs. Here's an example:
% ls -ltr /var/log/kafka/MyTopic-0total 4-rw-r--r-- 1 root root 14
Jul 17 15:05 leader-epoch-checkpoint-rw-r--r-- 1 root root 10485756 Jul 17
15:05 00000000000005484128.timeindex-rw-r--r-- 1 root root 0 Jul
17 15:05 00000000000005484128.log-rw-r--r-- 1 root root 10485760 Jul 17 15:05
00000000000005484128.index
I kept my eyes on the directory for each partition as the producer was
publishing data and I saw periodic .deleted files. Does it mean that Kafka was
deleting logs?
Any help would be highly appreciated.
On Wednesday, July 17, 2019, 01:47:44 PM EDT, Peter Bukowinski
<[email protected]> wrote:
Can you share your broker and topic config here?
> On Jul 17, 2019, at 10:09 AM, Sachin Nikumbh <[email protected]>
> wrote:
>
> Thanks for the quick response, Tom.
> I should have mentioned in my original post that I am always using
> --from-beginning with my console consumer. Even then I don't get any data.
> And as mentioned, the .log files are of size 0 bytes.
> On Wednesday, July 17, 2019, 11:09:22 AM EDT, Thomas Aley
><[email protected]> wrote:
>
> Hi Sachin,
>
> Try adding --from-beginning to your console consumer to view the
> historically produced data. By default the console consumer starts from
> the last offset.
>
> Tom Aley
> [email protected]
>
>
>
> From: Sachin Nikumbh <[email protected]>
> To: Kafka Users <[email protected]>
> Date: 17/07/2019 16:01
> Subject: [EXTERNAL] Kafka logs are getting deleted too soon
>
>
>
> Hi all,
> I have ~ 96GB of data in files that I am trying to get into a Kafka
> cluster. I have ~ 11000 keys for the data and I have created 15 partitions
> for my topic. While my producer is dumping data in Kafka, I have a console
> consumer that shows me that kafka is getting the data. The producer runs
> for a few hours before it is done. However, at this point, when I run the
> console consumer, it does not fetch any data. If I look at the logs
> directory, .log files for all the partitions are of 0 byte size.
> If I am not wrong, the default value for log.retention.bytes is -1 which
> means there is no size limit for the logs/partition. I do want to make
> sure that the value for this setting is per partition. Given that the
> default time based retention is 7 days, I am failing to understand why the
> logs are getting deleted. The other thing that confuses me is that when I
> use kafka.tools.GetOffsetShell, it shows me large enough values for all
> the 15 partitions for offsets.
> Can someone please help me understand why I don't see logs and why
> is kafka.tools.GetOffsetShell making me believe there is data.
> ThanksSachin
>
>
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