Are request.required.acks and min.insync.replicas still supported? Should acks be used instead?
Matthew Hayes
props.put("request.required.acks", "-1");
props.put("min.insync.replicas", 2);
WARN The configuration min.insync.replicas = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
WARN The configuration request.required.acks = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
Should "acks" be used instead as their replacement? Reading the documentation below I am a little confused. Settings "acks" to "all" is supposedly the strongest guarantee. According to the documentation this requires that all ISR send an ack. But what if there is only 1 ISR because the other nodes are down? Then it seems setting acks to 2 or 3 would be a stronger guarantee.
http://kafka.apache.org/documentation.html#newproducerconfigs
Thanks,
Matt
Gwen Shapira
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Matthew Hayes
On Tuesday, November 10, 2015 at 6:22:58 PM UTC-8, Gwen Shapira wrote:
Hi Mathew,Looks like you are using the new producer? In this case "acks = all" is identical to "request.required.acks=-1" in the old producer."min.insync.replicas" is a broker configuration and not a producer configuration. If you had it configured in the producer until now, it probably didn't do what you expected...Gwen
On Tue, Nov 10, 2015 at 6:17 PM, Matthew Hayes <matthew.te...@gmail.com> wrote:
Hi,I set these properties:props.put("request.required.acks", "-1");
props.put("min.insync.replicas", 2);
But I see these warnings logged. Are these configs no longer used?WARN The configuration min.insync.replicas = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
WARN The configuration request.required.acks = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
Should "acks" be used instead as their replacement? Reading the documentation below I am a little confused. Settings "acks" to "all" is supposedly the strongest guarantee. According to the documentation this requires that all ISR send an ack. But what if there is only 1 ISR because the other nodes are down? Then it seems setting acks to 2 or 3 would be a stronger guarantee.
http://kafka.apache.org/documentation.html#newproducerconfigs
Thanks,
Matt
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Gwen Shapira
Exactly.
Ah thanks Gwen. Yep I'm using the new producer. I've just started to use these configs so wasn't sure. So I could update the broker configuration to min.insync.replicas=2 and that would apply to all topics I'm assuming. Then if I set "acks = all" will it require that there are at least 2 ISR for the request to succeed?
-Matt
On Tuesday, November 10, 2015 at 6:22:58 PM UTC-8, Gwen Shapira wrote:
Hi Mathew,Looks like you are using the new producer? In this case "acks = all" is identical to "request.required.acks=-1" in the old producer."min.insync.replicas" is a broker configuration and not a producer configuration. If you had it configured in the producer until now, it probably didn't do what you expected...Gwen
On Tue, Nov 10, 2015 at 6:17 PM, Matthew Hayes <matthew.te...@gmail.com> wrote:
Hi,I set these properties:props.put("request.required.acks", "-1");
props.put("min.insync.replicas", 2);
But I see these warnings logged. Are these configs no longer used?WARN The configuration min.insync.replicas = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
WARN The configuration request.required.acks = null was supplied but isn't a known config. (org.apache.kafka.clients.producer.ProducerConfig)
Should "acks" be used instead as their replacement? Reading the documentation below I am a little confused. Settings "acks" to "all" is supposedly the strongest guarantee. According to the documentation this requires that all ISR send an ack. But what if there is only 1 ISR because the other nodes are down? Then it seems setting acks to 2 or 3 would be a stronger guarantee.
http://kafka.apache.org/documentation.html#newproducerconfigs
Thanks,
Matt
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