Hi ChangZhuo,
Yes, restoring from a savepoint is expected to be significantly slower
from a checkpoint.
Regards,
Roman
On Mon, Oct 25, 2021 at 9:45 AM ChangZhuo Chen (陳昌倬) <czc...@czchen.org> wrote:
>
> Hi,
>
> We found that our application savepoint restoration time (~ 40 mins) is
> much slower than checkpoint restoration time (~ 4 mins). We wonder if
> this is expected behavior or not?
>
>
> Some detail about the environment:
>
> * Flink version: 1.14.0
> * Persistent storage is GCS, via the following jars:
> * flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar
> * gcs-connector-hadoop3-2.2.2-shaded.jar
> * Unaligned checkpoint is enabled.
> * The network ingress for checkpoint restoration (~ 750 MiB/s) is much
> faster than savepoint restoration (~ 50 MiB/s)
> * Checkpoint and savepoint uses different GCS buckets, not sure if this
> will affect the throughput of GCS.
>
>
> --
> ChangZhuo Chen (陳昌倬) czchen@{czchen,debian}.org
> http://czchen.info/
> Key fingerprint = BA04 346D C2E1 FE63 C790 8793 CC65 B0CD EC27 5D5B
