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From 张祥 <xiangzhang1...@gmail.com>
Subject Re: what happened in case of single disk failure
Date Wed, 04 Mar 2020 08:46:08 GMT
Another question, according to my memory, the broker needs to be restarted
after replacing disk to recover this. Is that correct? If so, I take that
Kafka cannot know by itself that the disk has been replaced, manually
restart is necessary.

张祥 <xiangzhang1128@gmail.com> 于2020年3月4日周三 下午2:48写道:

> Thanks Peter, it makes a lot of sense.
> Peter Bukowinski <pmbuko@gmail.com> 于2020年3月3日周二 上午11:56写道:
>> Whether your brokers have a single data directory or multiple data
>> directories on separate disks, when a disk fails, the topic partitions
>> located on that disk become unavailable. What happens next depends on how
>> your cluster and topics are configured.
>> If the topics on the affected broker have replicas and the minimum ISR
>> (in-sync replicas) count is met, then all topic partitions will remain
>> online and leaders will move to another broker. Producers and consumers
>> will continue to operate as usual.
>> If the topics don’t have replicas or the minimum ISR count is not met,
>> then the topic partitions on the failed disk will be offline. Producers can
>> still send data to the affected topics — it will just go to the online
>> partitions. Consumers can still consume data from the online partitions.
>> -- Peter
>> > On Mar 2, 2020, at 7:00 PM, 张祥 <xiangzhang1128@gmail.com> wrote:
>> >
>> > Hi community,
>> >
>> > I ran into disk failure when using Kafka, and fortunately it did not
>> crash
>> > the entire cluster. So I am wondering how Kafka handles multiple disks
>> and
>> > it manages to work in case of single disk failure. The more detailed,
>> the
>> > better. Thanks !

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