Hi,
by default all the metadata is lost when shutting down the JobManager in
a non high available setup. Flink uses Zookeeper together with a
distributed filesystem to store the required metadata [1] in a
persistent and distributed manner.
A single node setup is rather uncommon, but you can also start Zookeeper
locally as it is done in our end-to-end tests [2].
I hope this helps.
Regards,
Timo
[1]
https://ci.apache.org/projects/flink/flink-docs-master/ops/jobmanager_high_availability.html
[2]
https://github.com/apache/flink/blob/master/flink-end-to-end-tests/test-scripts/test_ha_datastream.sh
Am 08.11.18 um 14:15 schrieb Chang Liu:
Or to say, how can I keep the jobs for system patching, server
restart, etc. Is it related to Standalone vs YARN? Or is it related to
whether to use Zookeeper?
Many thanks!
Best regards/祝好,
Chang Liu 刘畅
On 8 Nov 2018, at 13:38, Chang Liu <fluency...@gmail.com
<mailto:fluency...@gmail.com>> wrote:
Thanks!
If I have a cluster more than one node (standalone or YRAN), can I
stop and start any single node among them and keep the job running?
Best regards/祝好,
Chang Liu 刘畅
On 7 Nov 2018, at 16:17, 秦超峰 <18637156...@163.com
<mailto:18637156...@163.com>> wrote:
the second
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定制
On 11/07/2018 17:14, Chang Liu <mailto:fluency...@gmail.com> wrote:
Hi,
I have a question regarding whether the current running job will
restart if I stop and start the flink cluster?
1. Let’s say I am just having a Standalone one node cluster.
2. I have several Flink jobs already running on the cluster.
3. If I do a bin/cluster-stop.sh and then do a
bin/cluster-start.sh, will be previously running job restart again?
OR
Before I do bin/cluster-stop.sh, I have to do Savepoints for
each of the job.
After bin/cluster-start.sh is finished, I have to do Start Job
based on Savepoints triggered before for each of the job I want
to restart.
Many thanks in advance :)
Best regards/祝好,
Chang Liu 刘畅
