Re: ZooKeeper 3.4 end of life
I don’t think you’ll find an official EOL announcement. Here’s a guide, but do note the phrase “on demand” for minor releases. You should interpret “on demand” as when the developers feel the issues in the current point-release code base are numerous enough or critical enough to warrant the effort. https://cwiki.apache.org/confluence/display/ZOOKEEPER/Roadmap Best, Erick > On Aug 24, 2020, at 8:29 AM, h00452626 wrote: > > Hey man, > I'm wondering where the announcement is, I'm searching the EOL rule of ZK > but found nothing. > can u send me the link of the announcement?I will be very thankful. > > > > > -- > Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: ZooKeeper 3.4 end of life
Hey man, I'm wondering where the announcement is, I'm searching the EOL rule of ZK but found nothing. can u send me the link of the announcement?I will be very thankful. -- Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html
Re: ZooKeeper 3.4 end of life
The problem with Solr related to use TLS with ZK is the following: * 3.5.5 seem to only support tls certificate authentication together with TLS . Solr support es only digest and Kerberos authentication. However, I have to check in the ZK jiras if this has changed with higher ZK versions * quorum tls will work but again only with tls authentication (not Kerberos etc). Again, one needs to check the ZK jiras which versions is affected and if this has been confirmed If you don’t use TLS then zk in any version (potentially also ZK 3.6 - to be tested) should work. If you need TLS check if your authentication methods are supported. > Am 15.04.2020 um 10:19 schrieb Bram Van Dam : > > On 09/04/2020 16:03, Bram Van Dam wrote: >> Thanks, Erick. I'll give it a go this weekend and see how it behaves. >> I'll report back so there's a record of my attempts in case anyone else >> ends up asking the same question. > > Here's a quick update after non-exhaustive testing: Running SolrCloud > 7.7.2 against ZK 3.5.7 seems to work. This is using the same Ensemble > configuration as in 3.4, but with 4-letter-words now explicitly enabled. > > ZK 3.5 allegedly makes it easier to use TLS throughout the ensemble, but > I haven't tried that in conjunction with Solr yet. I'll give it a go if > I can find the time. > > - Bram
Re: ZooKeeper 3.4 end of life
Good to hear and thanks for reporting back. The other thing ZK 3.5 allegedly makes easier is dynamically reconfiguring the ensemble. Again, haven’t personally tried it but I’d be cautious about that since Solr won’t be using the 3.5 jars and just dropping the 3.5 jars in for Solr to use would be totally uncharted territory. > On Apr 15, 2020, at 4:19 AM, Bram Van Dam wrote: > > On 09/04/2020 16:03, Bram Van Dam wrote: >> Thanks, Erick. I'll give it a go this weekend and see how it behaves. >> I'll report back so there's a record of my attempts in case anyone else >> ends up asking the same question. > > Here's a quick update after non-exhaustive testing: Running SolrCloud > 7.7.2 against ZK 3.5.7 seems to work. This is using the same Ensemble > configuration as in 3.4, but with 4-letter-words now explicitly enabled. > > ZK 3.5 allegedly makes it easier to use TLS throughout the ensemble, but > I haven't tried that in conjunction with Solr yet. I'll give it a go if > I can find the time. > > - Bram
Re: ZooKeeper 3.4 end of life
On 09/04/2020 16:03, Bram Van Dam wrote: > Thanks, Erick. I'll give it a go this weekend and see how it behaves. > I'll report back so there's a record of my attempts in case anyone else > ends up asking the same question. Here's a quick update after non-exhaustive testing: Running SolrCloud 7.7.2 against ZK 3.5.7 seems to work. This is using the same Ensemble configuration as in 3.4, but with 4-letter-words now explicitly enabled. ZK 3.5 allegedly makes it easier to use TLS throughout the ensemble, but I haven't tried that in conjunction with Solr yet. I'll give it a go if I can find the time. - Bram
Re: ZooKeeper 3.4 end of life
Ah, understood. It always looks better to be able to say “I’ve tried it and this is what I found” than “Uh, I’ll have to get back to you on that” ;) I’ve occasionally been able to assuage clients like that by pointing out that often, especially with Open Source, announcing end of support is often more about relieving the burden on programmers of maintaining multiple versions than anything being horribly wrong. Best, Erick > On Apr 9, 2020, at 10:03 AM, Bram Van Dam wrote: > > Thanks, Erick. I'll give it a go this weekend and see how it behaves. > I'll report back so there's a record of my attempts in case anyone else > ends up asking the same question. > > Some of our customers get a bit nervous when software goes out of > support, even if it works fine, so I try to be prepared ;-) > > On 09/04/2020 13:50, Erick Erickson wrote: >> All it means is that there won’t be upgrades/improvements to >> ZK, 3.4 will still run. So there’s no need to move to 3.5 independent >> of upgrading Solr just because that version of ZK is unsupported >> going forward. >> >> I haven’t personally tried to run 3.5 against an earlier version, but >> one thing you’ll probably want to do if you try it is whitelist >> “ruok”, “mntr”, and “conf” in your Zookeeper config, see the >> Zookeeper documentation. NOTE: that is only necessary if you >> want to see the Zookeeper status in the admin UI, those >> commands aren’t used by anything else in Solr. >> >> The JIRA (SOLR-8346) contains a _ton_ of changes, but the mostly >> fall in two categories: Using a file rather than strings in tests and >> trying to handle the whitelist programmatically, neither of which >> are relevant to just dropping a newer version of ZK in.
Re: ZooKeeper 3.4 end of life
Thanks, Erick. I'll give it a go this weekend and see how it behaves. I'll report back so there's a record of my attempts in case anyone else ends up asking the same question. Some of our customers get a bit nervous when software goes out of support, even if it works fine, so I try to be prepared ;-) On 09/04/2020 13:50, Erick Erickson wrote: > All it means is that there won’t be upgrades/improvements to > ZK, 3.4 will still run. So there’s no need to move to 3.5 independent > of upgrading Solr just because that version of ZK is unsupported > going forward. > > I haven’t personally tried to run 3.5 against an earlier version, but > one thing you’ll probably want to do if you try it is whitelist > “ruok”, “mntr”, and “conf” in your Zookeeper config, see the > Zookeeper documentation. NOTE: that is only necessary if you > want to see the Zookeeper status in the admin UI, those > commands aren’t used by anything else in Solr. > > The JIRA (SOLR-8346) contains a _ton_ of changes, but the mostly > fall in two categories: Using a file rather than strings in tests and > trying to handle the whitelist programmatically, neither of which > are relevant to just dropping a newer version of ZK in.
Re: ZooKeeper 3.4 end of life
All it means is that there won’t be upgrades/improvements to ZK, 3.4 will still run. So there’s no need to move to 3.5 independent of upgrading Solr just because that version of ZK is unsupported going forward. I haven’t personally tried to run 3.5 against an earlier version, but one thing you’ll probably want to do if you try it is whitelist “ruok”, “mntr”, and “conf” in your Zookeeper config, see the Zookeeper documentation. NOTE: that is only necessary if you want to see the Zookeeper status in the admin UI, those commands aren’t used by anything else in Solr. The JIRA (SOLR-8346) contains a _ton_ of changes, but the mostly fall in two categories: Using a file rather than strings in tests and trying to handle the whitelist programmatically, neither of which are relevant to just dropping a newer version of ZK in. Again, though, there’s no reason to even try it unless you need something in a more recent ZK. Best, Erick > On Apr 9, 2020, at 5:28 AM, Bram Van Dam wrote: > > Hey folks, > > The ZK team just announced that they're dropping 3.4 support as of the > 1st of June, 2020. > > What does this mean for those of us still on Solr < 8.2? From what I can > tell, ZooKeeper 3.5+ does not work with older Solr versions. > > Has anyone managed to get a 3.5+ to work with Solr 7 at all? > > Thanks, > > - Bram
ZooKeeper 3.4 end of life
Hey folks, The ZK team just announced that they're dropping 3.4 support as of the 1st of June, 2020. What does this mean for those of us still on Solr < 8.2? From what I can tell, ZooKeeper 3.5+ does not work with older Solr versions. Has anyone managed to get a 3.5+ to work with Solr 7 at all? Thanks, - Bram
