Are these console messages/alerts normal?

[Stilez]

I don't remember this before. During a replication (local zfs send -R/recv), my console is occasionally being spammed with repeated copies of this message in bursts of 5 or 10:

zfsd 3099 - - Consumer:EventsPending(): POLLHUP detected on devd socket​

These entries in daemon.log seem to be the same thing (the first number is the line number in the log, for ease):

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7148240 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.163995+01:00 my-server.mysite zfsd 3099 - - POLLHUP detected on devd socket.​

7148241 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.164033+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148242 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.164046+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148243 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.164071+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148244 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.240414+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148245 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.240459+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148246 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.240929+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148247 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.240958+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148248 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.287188+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148249 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.287226+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148250 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.287334+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148251 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.287359+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148252 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.352338+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148253 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.352372+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148254 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.352475+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148255 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.352502+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148256 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.426291+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148257 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.426340+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148258 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.426442+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148259 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.426468+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148260 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.459087+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148261 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.459119+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148262 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.459274+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148263 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.459311+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148264 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.559794+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148265 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.559832+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148266 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.559972+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148267 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.560017+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

7148268 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.595953+01:00 my-server.mysite zfsd 3099 - - Consumer::EventsPending(): POLLHUP detected on devd socket.​

7148269 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.595972+01:00 my-server.mysite zfsd 3099 - - Disconnecting from devd.​

7148270 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.596577+01:00 my-server.mysite zfsd 3099 - - ConnectToDevd: Connecting to devd.​

7148271 Sep 6 13:16:08 my-server 1 2020-09-06T13:16:08.596610+01:00 my-server.mysite zfsd 3099 - - Connection to devd successful​

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Any ideas? Worry or not worry?