It looks like we ported it to 3.5.
See the subtask
https://issues.apache.org/jira/browse/ZOOKEEPER-2792
Enrico
Il giorno 13/07/20, 10:37 "kuldeep singh" <kuldeep.sing...@gmail.com> ha
scritto:
Hi Team,
I appreciate it if I will get a response as soon as possible, as I am stuck
at this point.
Thanks,
---------------------
Kuldeep Singh Budania
On Mon, Jul 13, 2020 at 11:10 AM kuldeep singh <kuldeep.sing...@gmail.com>
wrote:
> Hi Team,
>
> Server to Server communication is not supported in 3.5.6 version as per
> below JIRA issue?
>
> https://issues.apache.org/jira/browse/ZOOKEEPER-2639
>
> Thanks,
> ---------------------
> Kuldeep Singh Budania
>
>
>
> On Thu, Jul 2, 2020 at 4:24 PM kuldeep singh <kuldeep.sing...@gmail.com>
> wrote:
>
>> Thanks for the reply.
>>
>> Now my ZKCli cmd is working fine as we use some our customized
>> authentication and we resolve the issue.
>>
>> Now I am going to implement Server to Server communication.
>>
>> Thanks,
>> ---------------------
>> Kuldeep Singh Budania
>>
>>
>>
>> On Thu, Jul 2, 2020 at 3:53 PM Szalay-Bekő Máté <
>> szalay.beko.m...@gmail.com> wrote:
>>
>>> I think SSL is working for you already... If you managed to start the
>>> zkCli.sh and be able to connect to ZooKeeper on the secure port and
issue
>>> any kind of command (like: " ls / "), then the wire encryption is
working
>>> and your server/client communication is secured by ZooKeeper.
>>>
>>> Why you want to run the following command?
>>> addauth ztpasswd zooadmin:<password>
>>>
>>> Do you also want to configure a superDigest user in ZooKeeper? Please
>>> note
>>> that this command is independent from SSL. If you need to create a
>>> username-password pair for digest authentication then please use the
>>> command in the following way:
>>> addauth digest zooadmin:yourSuperSecretPassword
>>>
>>> Kind regards,
>>> Mate
>>>
>>> On Thu, Jul 2, 2020 at 6:59 AM kuldeep singh <kuldeep.sing...@gmail.com>
>>> wrote:
>>>
>>> > 1. sh zkCli.sh --config /etc/zookeeper -server localhost:2281
>>> >
>>> > 2. addauth ztpasswd zooadmin:<password>
>>> >
>>> >
>>> > Thanks,
>>> > ---------------------
>>> > Kuldeep Singh Budania
>>> >
>>> >
>>> >
>>> > On Thu, Jul 2, 2020 at 9:56 AM kuldeep singh <
>>> kuldeep.sing...@gmail.com>
>>> > wrote:
>>> >
>>> > > Hi Team,
>>> > >
>>> > > Any update on this?
>>> > >
>>> > > Thanks,
>>> > > ---------------------
>>> > > Kuldeep Singh Budania
>>> > >
>>> > >
>>> > >
>>> > > On Wed, Jul 1, 2020 at 6:43 PM kuldeep singh <
>>> kuldeep.sing...@gmail.com>
>>> > > wrote:
>>> > >
>>> > >> Sorry this is my bad, there were server setting like below
>>> > >>
>>> > >> export SERVER_JVMFLAGS="
>>> > >>
>>> > >>
>>> > >>
>>> >
>>>
-Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>
>>> > >>
>>> -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>
>>> >
>>>
-Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>
>>> > >>
>>> > >>
>>> > >> export CLIENT_JVMFLAGS="
>>> > >>
>>> > >>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >> -Dzookeeper.client.secure=true
>>> > >>
>>> -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>
>>> >
>>>
-Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>
>>> > >> I want to have SSL between client to server communication
>>> > >>
>>> > >> I am already following the same link which you have shared with me
>>> but
>>> > >> that is not working.
>>> > >>
>>> > >> Zoo.cfg
>>> > >>
>>> > >> secureClientPort=2281
>>> > >> initLimit=10
>>> > >> syncLimit=5
>>> > >> dataDir=/var/lib/zookeeper/data
>>> > >> tickTime=2000
>>> > >> autopurge.snapRetainCount=3
>>> > >> autopurge.purgeInterval=1
>>> > >> admin.enableServer=false
>>> > >> standaloneEnabled=false
>>> > >> jute.maxbuffer=2147483648
>>> > >>
serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >> server.1=host1_priv:10288:10388
>>> > >> server.2=host2_priv:10288:10388
>>> > >> server.3=host3_priv:10288:10388
>>> > >>
>>> > >>
>>> > >> command to connect using zkcli
>>> > >>
>>> > >> 1. zkcli zoo.cfg localhost:2281
>>> > >> 2. addauth ztpasswd usernaem:password
>>> > >>
>>> > >> after second step we are getting below error
>>> > >>
>>> > >> WatchedEvent state:AuthFailed type:None path:null
>>> > >>
>>> > >>
>>> > >> Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >> [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No authentication
>>> > provider
>>> > >> for scheme: ztpasswd has x509 ip digest*
>>> > >>
>>> > >> Thanks,
>>> > >> ---------------------
>>> > >> Kuldeep Singh Budania
>>> > >>
>>> > >>
>>> > >>
>>> > >> On Wed, Jul 1, 2020 at 6:25 PM Szalay-Bekő Máté <
>>> > >> szalay.beko.m...@gmail.com> wrote:
>>> > >>
>>> > >>> > No authentication provider for scheme: ztpasswd has x509 ip
>>> digest*
>>> > >>>
>>> > >>> This suggest you have some configuration error... Where did you
>>> use the
>>> > >>> "ztpasswd" string in your configs / commands?
>>> > >>>
>>> > >>> On Wed, Jul 1, 2020 at 2:53 PM Szalay-Bekő Máté <
>>> > >>> szalay.beko.m...@gmail.com>
>>> > >>> wrote:
>>> > >>>
>>> > >>> > > My ZK server is up and running in secure mode
>>> > >>> >
>>> > >>> > What is your goal? You want to setup client-server SSL
>>> connection?
>>> > >>> >
>>> > >>> > see:
>>> > >>> >
>>> > >>>
>>> >
>>>
https://cwiki.apache.org/confluence/display/ZOOKEEPER/ZooKeeper+SSL+User+Guide
>>> > >>> >
>>> > >>> > (or you want to have both SSL and SASL enabled?)
>>> > >>> >
>>> > >>> > Anyway, please remove the following line from the
>>> SERVER_JVMFLAGS:
>>> > >>> >
>>> >
-Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> > This is a configuration that makes sense only for the ZooKeeper
>>> > client,
>>> > >>> > not for the server. For the server, use the following:
>>> > >>> >
>>> > >>> >
>>> > >>>
>>> >
>>>
-Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >
>>> > >>> > If it doesn't solve the issue, then can you please send your
>>> zoo.cfg
>>> > >>> file?
>>> > >>> > Also can you please send the zkCli command you execute? (you
>>> need to
>>> > >>> > connect to the secure ZooKeeper port, unless portUnification is
>>> > >>> enabled)
>>> > >>> >
>>> > >>> > Kind regards,
>>> > >>> > Mate
>>> > >>> >
>>> > >>> > On Wed, Jul 1, 2020 at 9:48 AM kuldeep singh <
>>> > >>> kuldeep.sing...@gmail.com>
>>> > >>> > wrote:
>>> > >>> >
>>> > >>> >> Hi,
>>> > >>> >>
>>> > >>> >> we have done below changes in java.env file
>>> > >>> >>
>>> > >>> >> export SERVER_JVMFLAGS="
>>> > >>> >>
>>> > >>> >>
>>> > >>>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> >>
>>> > -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >>> >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>> >>
>>> > >>>
>>> >
>>>
-Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >>> >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>> >>
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> export CLIENT_JVMFLAGS="
>>> > >>> >>
>>> > >>> >>
>>> > >>>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> >> -Dzookeeper.client.secure=true
>>> > >>> >>
>>> > -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >>> >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>> >>
>>> > >>>
>>> >
>>>
-Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >>> >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>> >>
>>> > >>> >> I have started the ZK server and it is up without any issue.
>>> > >>> >>
>>> > >>> >> But now when I login to ZkCli then it gives the below error.
>>> > >>> >>
>>> > >>> >> WatchedEvent state:AuthFailed type:None path:null
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >>> >> [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No
>>> authentication
>>> > >>> provider
>>> > >>> >> for scheme: ztpasswd has x509 ip digest*
>>> > >>> >>
>>> > >>> >> Please help me on this issue
>>> > >>> >>
>>> > >>> >> Thanks,
>>> > >>> >> ---------------------
>>> > >>> >> Kuldeep Singh Budania
>>> > >>> >> Software Architect
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> On Wed, Jul 1, 2020 at 12:05 PM kuldeep singh <
>>> > >>> kuldeep.sing...@gmail.com>
>>> > >>> >> wrote:
>>> > >>> >>
>>> > >>> >> > Hi,
>>> > >>> >> >
>>> > >>> >> > My ZK server is up and running in secure mode, But When I am
>>> > >>> trying to
>>> > >>> >> > connect to the ZK server using ZKCli, it gives the below
>>> error.
>>> > >>> >> >
>>> > >>> >> > WatchedEvent state:AuthFailed type:None path:null
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> > Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >>> >> > [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No
>>> authentication
>>> > >>> >> provider
>>> > >>> >> > for scheme: ztpasswd has x509 ip digest*
>>> > >>> >> >
>>> > >>> >> > Can someone please help me on this issue. we are using the
>>> 3.5.6
>>> > >>> >> version.
>>> > >>> >> >
>>> > >>> >> > I appreciate if I will get a response as soon as possible, as
>>> I am
>>> > >>> stuck
>>> > >>> >> > at this point.
>>> > >>> >> >
>>> > >>> >> > Thanks,
>>> > >>> >> > ---------------------
>>> > >>> >> > Kuldeep Singh Budania
>>> > >>> >> > Software Architect
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> > On Thu, Jun 25, 2020 at 11:54 AM Enrico Olivelli - Diennea
>>> > >>> >> > <enrico.olive...@diennea.com.invalid> wrote:
>>> > >>> >> >
>>> > >>> >> >> I mean in zoo.cfg
>>> > >>> >> >> Not as a system property
>>> > >>> >> >>
>>> > >>> >> >> Enrico
>>> > >>> >> >>
>>> > >>> >> >> Il giorno 25/06/20, 08:19 "Enrico Olivelli - Diennea" <
>>> > >>> >> >> enrico.olive...@diennea.com.INVALID> ha scritto:
>>> > >>> >> >>
>>> > >>> >> >> Hi
>>> > >>> >> >> You have to enable Netty on the server side
>>> > >>> >> >>
>>> > >>> >> >> Something like:
>>> > >>> >> >>
>>> > >>> >>
>>> > serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >> >>
>>> > >>> >> >> Hope that helps
>>> > >>> >> >> Enrico
>>> > >>> >> >>
>>> > >>> >> >> Il giorno 24/06/20, 19:17 "kuldeep singh" <
>>> > >>> >> kuldeep.sing...@gmail.com>
>>> > >>> >> >> ha scritto:
>>> > >>> >> >>
>>> > >>> >> >> Hi,
>>> > >>> >> >>
>>> > >>> >> >> I got below error while setting SSL properties in
>>> > zkEnv.sh
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
==========================================================================================
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,864 - INFO
>>> > [main:QuorumPeerConfig@133]
>>> > >>> -
>>> > >>> >> >> Reading
>>> > >>> >> >> configuration from: /etc/zookeeper/zoo.cfg
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,874 - INFO
>>> > [main:QuorumPeerConfig@385]
>>> > >>> -
>>> > >>> >> >> clientPortAddress is 0.0.0.0/0.0.0.0:10181
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,874 - INFO
>>> > [main:QuorumPeerConfig@399]
>>> > >>> -
>>> > >>> >> >> secureClientPortAddress is 0.0.0.0/0.0.0.0:2281
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,878 - INFO [main:X509Util@79] -
>>> > >>> Setting
>>> > >>> >> -D
>>> > >>> >> >> jdk.tls.rejectClientInitiatedRenegotiation=true to
>>> > disable
>>> > >>> >> >> client-initiated
>>> > >>> >> >> TLS renegotiation
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,897 - INFO
>>> > >>> [main:DatadirCleanupManager@78]
>>> > >>> >> -
>>> > >>> >> >> autopurge.snapRetainCount set to 3
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,897 - INFO
>>> > >>> [main:DatadirCleanupManager@79]
>>> > >>> >> -
>>> > >>> >> >> autopurge.purgeInterval set to 1
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,898 - INFO [
>>> > >>> >> >> PurgeTask:DatadirCleanupManager$PurgeTask@138] -
>>> Purge
>>> > >>> task
>>> > >>> >> >> started.
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,899 - INFO
[main:ManagedUtil@46]
>>> -
>>> > >>> Log4j
>>> > >>> >> >> found with
>>> > >>> >> >> jmx enabled.
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,903 - INFO
>>> > >>> [PurgeTask:FileTxnSnapLog@103]
>>> > >>> >> -
>>> > >>> >> >> zookeeper.snapshot.trust.empty : false
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,910 - INFO [
>>> > >>> >> >> PurgeTask:DatadirCleanupManager$PurgeTask@144] -
>>> Purge
>>> > >>> task
>>> > >>> >> >> completed.
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,975 - INFO
>>> [main:QuorumPeerMain@141
>>> > ]
>>> > >>> -
>>> > >>> >> >> Starting quorum
>>> > >>> >> >> peer
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,983 - INFO
>>> > [main:ServerCnxnFactory@135]
>>> > >>> -
>>> > >>> >> >> Using
>>> > >>> >> >> org.apache.zookeeper.server.NIOServerCnxnFactory as
>>> > server
>>> > >>> >> >> connection
>>> > >>> >> >> factory
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,986 - INFO
>>> > >>> [main:NIOServerCnxnFactory@673]
>>> > >>> >> -
>>> > >>> >> >> Configuring NIO connection handler with 10s
>>> sessionless
>>> > >>> >> >> connection timeout,
>>> > >>> >> >> 2 selector thread(s), 16 worker threads, and 64 kB
>>> direct
>>> > >>> >> buffers.
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,992 - INFO
>>> > >>> [main:NIOServerCnxnFactory@686
>>> > >>> >> ]
>>> > >>> >> >> - binding
>>> > >>> >> >> to port 0.0.0.0/0.0.0.0:10181
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,994 - INFO
>>> > [main:ServerCnxnFactory@135]
>>> > >>> -
>>> > >>> >> >> Using
>>> > >>> >> >> org.apache.zookeeper.server.NIOServerCnxnFactory as
>>> > server
>>> > >>> >> >> connection
>>> > >>> >> >> factory
>>> > >>> >> >>
>>> > >>> >> >> 2020-06-24 15:49:35,995 - ERROR
>>> [main:QuorumPeerMain@101
>>> > ]
>>> > >>> -
>>> > >>> >> >> Unexpected
>>> > >>> >> >> exception, exiting abnormally
>>> > >>> >> >>
>>> > >>> >> >> java.lang.UnsupportedOperationException: SSL isn't
>>> > >>> supported in
>>> > >>> >> >> NIOServerCnxn
>>> > >>> >> >>
>>> > >>> >> >> at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:644)
>>> > >>> >> >>
>>> > >>> >> >> at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:155)
>>> > >>> >> >>
>>> > >>> >> >> at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:123)
>>> > >>> >> >>
>>> > >>> >> >> at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:82)
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >> I have set the following properties in
>>> SERVER_JVMFLAGS in
>>> > >>> >> >> zkEnv.sh file :
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
"-Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
-Dzookeeper.ssl.keyStore.location=/var/opt/vs/SecureInterface/keystore/CassSpkkeystore.p12
>>> > >>> >> >> -Dzookeeper.ssl.keyStore.password=EvaiKiO1@123456
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
-Dzookeeper.ssl.trustStore.location=/var/opt/vs/SecureInterface/keystore/CassSpkTrustStore.jks
>>> > >>> >> >> -Dzookeeper.ssl.trustStore.password=EvaiKiO1@123456"
>>> > >>> >> >>
>>> > >>> >> >> Thanks,
>>> > >>> >> >> ---------------------
>>> > >>> >> >> Kuldeep Singh Budania
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >> On Mon, Jun 22, 2020 at 8:08 PM Jordan Zimmerman <
>>> > >>> >> >> jor...@jordanzimmerman.com>
>>> > >>> >> >> wrote:
>>> > >>> >> >>
>>> > >>> >> >> > It's the same as the normal ZooKeeper client:
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
https://zookeeper.apache.org/doc/r3.6.1/zookeeperAdmin.html#sc_authOptions
>>> > >>> >> >> > <
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
https://zookeeper.apache.org/doc/r3.6.1/zookeeperAdmin.html#sc_authOptions
>>> > >>> >> >> > >
>>> > >>> >> >> >
>>> > >>> >> >> > -Jordan
>>> > >>> >> >> >
>>> > >>> >> >> > > On Jun 22, 2020, at 5:50 AM, kuldeep singh <
>>> > >>> >> >> kuldeep.sing...@gmail.com>
>>> > >>> >> >> > wrote:
>>> > >>> >> >> > >
>>> > >>> >> >> > > Hi Team,
>>> > >>> >> >> > > How we will do secure communication between the
>>> > Curator
>>> > >>> >> >> framework and
>>> > >>> >> >> > > zookeeper 3.5.6 ?
>>> > >>> >> >> > > I didn't get any solution right now.
>>> > >>> >> >> > > I appreciate it if someone could help me with
the
>>> > same.
>>> > >>> >> >> > >
>>> > >>> >> >> > > Thanks,
>>> > >>> >> >> > > ---------------------
>>> > >>> >> >> > > Kuldeep Singh Budania
>>> > >>> >> >> > > Software Architect
>>> > >>> >> >> > >
>>> > >>> >> >> > >
>>> > >>> >> >> > > On Fri, Apr 17, 2020 at 4:53 PM Szalay-Bekő Máté
>>> <
>>> > >>> >> >> > szalay.beko.m...@gmail.com>
>>> > >>> >> >> > > wrote:
>>> > >>> >> >> > >
>>> > >>> >> >> > >> Hello Kuldeep,
>>> > >>> >> >> > >>
>>> > >>> >> >> > >> did you download the source from the ZooKeeper
>>> > >>> webpage, or
>>> > >>> >> >> checked out
>>> > >>> >> >> > from
>>> > >>> >> >> > >> git?
>>> > >>> >> >> > >> Anyway, the following commands should work:
>>> > >>> >> >> > >>
>>> > >>> >> >> > >> wget
>>> > >>> >> >> > >>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
https://downloads.apache.org/zookeeper/zookeeper-3.5.7/apache-zookeeper-3.5.7.tar.gz
>>> > >>> >> >> > >> tar xzvf ./apache-zookeeper-3.5.7.tar.gz
>>> > >>> >> >> > >> cd apache-zookeeper-3.5.7
>>> > >>> >> >> > >> mvn clean install -DskipTests
>>> > >>> >> >> > >>
>>> > >>> >> >> > >> I tested it with OpenJDK 8u424 and maven 3.6.0.
>>> > >>> >> >> > >>
>>> > >>> >> >> > >> Kind regards,
>>> > >>> >> >> > >> Mate
>>> > >>> >> >> > >>
>>> > >>> >> >> > >>
>>> > >>> >> >> > >> On Fri, Apr 17, 2020 at 12:51 PM kuldeep singh
<
>>> > >>> >> >> > kuldeep.sing...@gmail.com>
>>> > >>> >> >> > >> wrote:
>>> > >>> >> >> > >>
>>> > >>> >> >> > >>> Hi All,
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> I have download the zookeeper source code and
>>> run
>>> > >>> the mvn
>>> > >>> >> >> command for
>>> > >>> >> >> > >>> packaging but get problem on
"zookeeper-server"
>>> > >>> >> directory.
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> *command :- mvn clean package*
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> [ERROR] Failed to execute goal
>>> > >>> >> >> > >>>
>>> > >>> >> org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile
>>> > >>> >> >> > >>> (default-compile) on project zookeeper: Fatal
>>> error
>>> > >>> >> >> compiling:
>>> > >>> >> >> > >>> java.lang.NullPointerException -> [Help 1]
>>> > >>> >> >> > >>>
>>> > >>> org.apache.maven.lifecycle.LifecycleExecutionException:
>>> > >>> >> >> Failed to
>>> > >>> >> >> > execute
>>> > >>> >> >> > >>> goal
>>> > >>> >> >> org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile
>>> > >>> >> >> > >>> (default-compile) on project zookeeper: Fatal
>>> error
>>> > >>> >> >> compiling
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:108)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:76)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:116)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> >
>>> > >>> >> org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:361)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>> > >>> >> >> > >>> at
>>> > >>> >> java.lang.reflect.Method.invoke(Method.java:498)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
>>> > >>> >> >> > >>> Caused by:
>>> > >>> >> org.apache.maven.plugin.MojoExecutionException:
>>> > >>> >> >> Fatal error
>>> > >>> >> >> > >>> compiling
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1140)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:188)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:133)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
>>> > >>> >> >> > >>> ... 19 more
>>> > >>> >> >> > >>> Caused by:
>>> > >>> >> org.codehaus.plexus.compiler.CompilerException:
>>> > >>> >> >> > >>> java.lang.NullPointerException
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:173)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:174)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1129)
>>> > >>> >> >> > >>> ... 22 more
>>> > >>> >> >> > >>> Caused by: java.lang.RuntimeException:
>>> > >>> >> >> java.lang.NullPointerException
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.tools.javac.main.Main.compile(Main.java:559)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:126)
>>> > >>> >> >> > >>> ... 24 more
>>> > >>> >> >> > >>> Caused by: java.lang.NullPointerException
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.javac.model.JavacTypes.getOverriddenMethods(JavacTypes.java:306)
>>> > >>> >> >> > >>> at
>>> > >>> >> com.sun.tools.doclint.Env.setCurrent(Env.java:155)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.tools.doclint.Checker.scan(Checker.java:144)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.tools.doclint.DocLint$2.visitDecl(DocLint.java:285)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:359)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:346)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:720)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.visitNewClass(TreeScanner.java:280)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1532)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.visitVariable(TreeScanner.java:153)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.doclint.DocLint$DeclScanner.visitVariable(DocLint.java:373)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.doclint.DocLint$DeclScanner.visitVariable(DocLint.java:346)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:864)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.source.util.TreeScanner.scan(TreeScanner.java:91)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:99)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>
>>> > >>> >> >>
>>> com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:133)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:360)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:346)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:720)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.source.util.TreeScanner.scan(TreeScanner.java:91)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:99)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:120)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.doclint.DocLint$DeclScanner.visitCompilationUnit(DocLint.java:354)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.doclint.DocLint$DeclScanner.visitCompilationUnit(DocLint.java:346)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:550)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.tools.doclint.DocLint$3.started(DocLint.java:296)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.javac.api.ClientCodeWrapper$WrappedTaskListener.started(ClientCodeWrapper.java:668)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
com.sun.tools.javac.api.MultiTaskListener.started(MultiTaskListener.java:103)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1240)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
>>> > >>> >> >> > >>> at
>>> > >>> >> >> com.sun.tools.javac.main.Main.compile(Main.java:523)
>>> > >>> >> >> > >>> ... 27 more
>>> > >>> >> >> > >>> [ERROR]
>>> > >>> >> >> > >>> [ERROR] Re-run Maven using the -X switch to
>>> enable
>>> > >>> full
>>> > >>> >> >> debug logging.
>>> > >>> >> >> > >>> [ERROR]
>>> > >>> >> >> > >>> [ERROR] For more information about the errors
>>> and
>>> > >>> >> possible
>>> > >>> >> >> solutions,
>>> > >>> >> >> > >>> please read the following articles:
>>> > >>> >> >> > >>> [ERROR] [Help 1]
>>> > >>> >> >> > >>>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> Can someone help me on this issue?
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> Thanks,
>>> > >>> >> >> > >>> ---------------------
>>> > >>> >> >> > >>> Kuldeep Singh Budania
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>> On Sat, Apr 4, 2020 at 5:57 PM Szalay-Bekő
>>> Máté <
>>> > >>> >> >> > >>> szalay.beko.m...@gmail.com>
>>> > >>> >> >> > >>> wrote:
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>>> these exceptions can mean many things... I
>>> think
>>> > >>> this
>>> > >>> >> can
>>> > >>> >> >> be even
>>> > >>> >> >> > >> normal
>>> > >>> >> >> > >>>> duding rolling restart (as some connections
>>> get
>>> > >>> broken
>>> > >>> >> in
>>> > >>> >> >> this case)
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> However, I saw cases already when exceptions
>>> like
>>> > >>> these
>>> > >>> >> >> killed
>>> > >>> >> >> > receiver
>>> > >>> >> >> > >>> or
>>> > >>> >> >> > >>>> sender threads in QuorumCnxManager / Leader
>>> > >>> Election in
>>> > >>> >> >> such a way
>>> > >>> >> >> > that
>>> > >>> >> >> > >>>> they were not able to recover, so the node
was
>>> > >>> unable to
>>> > >>> >> >> connect to
>>> > >>> >> >> > any
>>> > >>> >> >> > >>>> quorum until restart. I remember seeing this
>>> in
>>> > 3.4
>>> > >>> too.
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> Do you see these exceptions in the second
>>> server
>>> > >>> (the
>>> > >>> >> one
>>> > >>> >> >> which you
>>> > >>> >> >> > >> just
>>> > >>> >> >> > >>>> upgraded in step 3)?
>>> > >>> >> >> > >>>> Is this issue reproducible?
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> What is the tickTime and initLimit you use?
>>> Maybe
>>> > >>> the
>>> > >>> >> >> server just
>>> > >>> >> >> > >> require
>>> > >>> >> >> > >>>> more time to sync?
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> I would need more logs to really see what
>>> > happened.
>>> > >>> Can
>>> > >>> >> >> you create a
>>> > >>> >> >> > >> Jira
>>> > >>> >> >> > >>>> issue and upload the logs and also the
>>> ZooKeeper
>>> > >>> >> configs?
>>> > >>> >> >> I am happy
>>> > >>> >> >> > to
>>> > >>> >> >> > >>>> take a closer look.
>>> > >>> >> >> > >>>> (if you need to re-run the test to collect
the
>>> > logs,
>>> > >>> >> then
>>> > >>> >> >> enabling
>>> > >>> >> >> > >> DEBUG
>>> > >>> >> >> > >>>> logs would be great. The INFO level logs are
>>> > usually
>>> > >>> >> >> enough for these
>>> > >>> >> >> > >>>> problems, but one can never know...)
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> Kind regards,
>>> > >>> >> >> > >>>> Mate
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> On Fri, Apr 3, 2020 at 10:05 AM kuldeep singh
>>> <
>>> > >>> >> >> > >> kuldeep.sing...@gmail.com
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>> wrote:
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>>> Hi Team,
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> I have done some POC on rolling upgrade and
>>> found
>>> > >>> below
>>> > >>> >> >> result.
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> 1. On 1st node upgrade zookeeper . Traffic
>>> was
>>> > >>> >> running
>>> > >>> >> >> fine
>>> > >>> >> >> > >> because
>>> > >>> >> >> > >>> 2
>>> > >>> >> >> > >>>>> nodes are already on old zookeeper.
>>> > >>> >> >> > >>>>> 2. On 1st node upgrade our application and
>>> > didn’t
>>> > >>> >> find
>>> > >>> >> >> any issue
>>> > >>> >> >> > >>>>> 3. On 2nd node upgrade zookeeper but got
>>> below
>>> > >>> error
>>> > >>> >> >> and zookeeper
>>> > >>> >> >> > >>> is
>>> > >>> >> >> > >>>>> not taking any requests
>>> > >>> >> >> > >>>>> 4.
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> java.io.EOFException
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> java.io.DataInputStream.readInt(DataInputStream.java:392)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.QuorumCnxManager$RecvWorker.run(QuorumCnxManager.java:747)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> 2020-03-30 14:19:55,587 - WARN
>>> > >>> >> >> > >>>>>
[RecvWorker:1:QuorumCnxManager$RecvWorker@765]
>>> -
>>> > >>> >> >> Interrupting
>>> > >>> >> >> > >>> SendWorker
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> 2020-03-30 14:19:55,588 - ERROR
>>> [LearnerHandler-/
>>> > >>> >> >> 192.168.44.73:33754
>>> > >>> >> >> > >>>>> :LearnerHandler@562] - Unexpected exception
>>> > >>> causing
>>> > >>> >> >> shutdown while
>>> > >>> >> >> > >>> sock
>>> > >>> >> >> > >>>>> still open
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> java.io.EOFException
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> java.io.DataInputStream.readInt(DataInputStream.java:392)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>
>>> > >>> >> >>
>>> > >>>
>>> org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:63)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.QuorumPacket.deserialize(QuorumPacket.java:83)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.jute.BinaryInputArchive.readRecord(BinaryInputArchive.java:108)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> at
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>>
org.apache.zookeeper.server.quorum.LearnerHandler.run(LearnerHandler.java:476)
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> 2020-03-30 14:19:55,588 - WARN
>>> > >>> >> >> > >>>>>
[SendWorker:1:QuorumCnxManager$SendWorker@679]
>>> -
>>> > >>> >> >> Interrupted while
>>> > >>> >> >> > >>>> waiting
>>> > >>> >> >> > >>>>> for message on queue
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> Please let me know is this the known issue
or
>>> > this
>>> > >>> is
>>> > >>> >> >> different issue
>>> > >>> >> >> > >>>> which
>>> > >>> >> >> > >>>>> is mention in Apache zookeeper documentation
>>> when
>>> > >>> >> >> upgrading from
>>> > >>> >> >> > >> 3.4.5
>>> > >>> >> >> > >>> to
>>> > >>> >> >> > >>>>> 3.5.6
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> Thanks,
>>> > >>> >> >> > >>>>> ---------------------
>>> > >>> >> >> > >>>>> Kuldeep Singh Budania
>>> > >>> >> >> > >>>>> Software Architect
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>> On Sun, Mar 29, 2020 at 9:06 AM Alexander
>>> Shraer
>>> > <
>>> > >>> >> >> shra...@gmail.com>
>>> > >>> >> >> > >>>>> wrote:
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>>> +1 to what Mate said (I wrote the quoted
>>> > >>> >> instructions).
>>> > >>> >> >> > >>>>>>
>>> > >>> >> >> > >>>>>>
>>> > >>> >> >> > >>>>>>
>>> > >>> >> >> > >>>>>> On Tue, Mar 24, 2020 at 7:03 AM Szalay-Bekő
>>> > Máté <
>>> > >>> >> >> > >>>>>> szalay.beko.m...@gmail.com>
>>> > >>> >> >> > >>>>>> wrote:
>>> > >>> >> >> > >>>>>>
>>> > >>> >> >> > >>>>>>> Hi Kuldeep,
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> I just want to provide you some background
>>> info
>>> > >>> about
>>> > >>> >> >> our
>>> > >>> >> >> > >>>>> documentation.
>>> > >>> >> >> > >>>>>>> The reason to upgrade to 3.4.6 first is to
>>> > avoid
>>> > >>> the
>>> > >>> >> >> following
>>> > >>> >> >> > >>> error:
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>>> 2013-01-30 11:32:10,663 [myid:2] - WARN
>>> > >>> [localhost/
>>> > >>> >> >> > >>> 127.0.0.1:2784
>>> > >>> >> >> > >>>>>>> :QuorumCnxManager@349] - Invalid server
>>> id:
>>> > >>> -65536
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> This error comes because of the protocol
>>> > changes
>>> > >>> >> between
>>> > >>> >> >> > >> ZooKeeper
>>> > >>> >> >> > >>>>> server
>>> > >>> >> >> > >>>>>>> nodes during connection initiation for
>>> leader
>>> > >>> >> election.
>>> > >>> >> >> In
>>> > >>> >> >> > >>> ZooKeeper
>>> > >>> >> >> > >>>>> 3.5
>>> > >>> >> >> > >>>>>> a
>>> > >>> >> >> > >>>>>>> protocol version was introduced (see
>>> > >>> ZOOKEEPER-107)
>>> > >>> >> and
>>> > >>> >> >> since
>>> > >>> >> >> > >> that
>>> > >>> >> >> > >>>> time
>>> > >>> >> >> > >>>>>> the
>>> > >>> >> >> > >>>>>>> fist long value sent in the initial
>>> message is
>>> > >>> not
>>> > >>> >> the
>>> > >>> >> >> server ID
>>> > >>> >> >> > >>> but
>>> > >>> >> >> > >>>>> the
>>> > >>> >> >> > >>>>>>> protocol version (-65536). In ZooKeeper
>>> 3.4.6
>>> > we
>>> > >>> made
>>> > >>> >> >> the old 3.4
>>> > >>> >> >> > >>>>>>> ZooKeepers backward compatible, so they
are
>>> > able
>>> > >>> to
>>> > >>> >> >> parse both
>>> > >>> >> >> > >> the
>>> > >>> >> >> > >>>> old
>>> > >>> >> >> > >>>>>> and
>>> > >>> >> >> > >>>>>>> the new protocol format (see
>>> ZOOKEEPER-1633).
>>> > >>> This
>>> > >>> >> >> issue happens
>>> > >>> >> >> > >>> only
>>> > >>> >> >> > >>>>>> when
>>> > >>> >> >> > >>>>>>> you need to use old (3.4.0 - 3.4.5) and
new
>>> > >>> (3.5.0+)
>>> > >>> >> >> ZooKeeper
>>> > >>> >> >> > >>>> servers
>>> > >>> >> >> > >>>>>>> together in the same cluster. During a
>>> rolling
>>> > >>> >> upgrade,
>>> > >>> >> >> this is
>>> > >>> >> >> > >>>> usually
>>> > >>> >> >> > >>>>>> the
>>> > >>> >> >> > >>>>>>> case to have old and new ZooKeepers
present
>>> > >>> together.
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> The fact that you haven't seen any issues
>>> might
>>> > >>> be
>>> > >>> >> >> caused by the
>>> > >>> >> >> > >>>> order
>>> > >>> >> >> > >>>>> of
>>> > >>> >> >> > >>>>>>> the servers. In ZooKeeper the connection
>>> > >>> initiation
>>> > >>> >> >> between the
>>> > >>> >> >> > >>>> servers
>>> > >>> >> >> > >>>>>>> during the leader election follows a
>>> specific
>>> > >>> rule.
>>> > >>> >> As
>>> > >>> >> >> far as I
>>> > >>> >> >> > >>>>> remember
>>> > >>> >> >> > >>>>>>> always the server with the larger ID 'wins
>>> the
>>> > >>> >> >> challenge', so it
>>> > >>> >> >> > >> is
>>> > >>> >> >> > >>>>>>> possible, that the old server didn't need
>>> to
>>> > >>> parse
>>> > >>> >> any
>>> > >>> >> >> initial
>>> > >>> >> >> > >>>> message
>>> > >>> >> >> > >>>>>> (if
>>> > >>> >> >> > >>>>>>> it had the largest ID) and this is why you
>>> > >>> haven't
>>> > >>> >> seen
>>> > >>> >> >> the
>>> > >>> >> >> > >> issue.
>>> > >>> >> >> > >>>> Also
>>> > >>> >> >> > >>>>>>> having 2 nodes up from the 3 nodes cluster
>>> > still
>>> > >>> >> makes
>>> > >>> >> >> the
>>> > >>> >> >> > >> cluster
>>> > >>> >> >> > >>>> work
>>> > >>> >> >> > >>>>>> (so
>>> > >>> >> >> > >>>>>>> you should also check if all the servers
>>> are
>>> > >>> part of
>>> > >>> >> >> the quorum).
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> I agree with Enrico and Norbert, the
>>> safest and
>>> > >>> most
>>> > >>> >> >> stable way
>>> > >>> >> >> > >> is
>>> > >>> >> >> > >>>>>> upgrade
>>> > >>> >> >> > >>>>>>> first to 3.4.latest, then go to
3.5.latest.
>>> > >>> Still, if
>>> > >>> >> >> you don't
>>> > >>> >> >> > >> see
>>> > >>> >> >> > >>>>> that
>>> > >>> >> >> > >>>>>>> you would hit this specific issue (e.g. no
>>> > >>> "Invalid
>>> > >>> >> >> server id" in
>>> > >>> >> >> > >>> the
>>> > >>> >> >> > >>>>> log
>>> > >>> >> >> > >>>>>>> files), and all the three servers can
>>> handle
>>> > >>> traffic,
>>> > >>> >> >> then maybe
>>> > >>> >> >> > >>> you
>>> > >>> >> >> > >>>>>> don't
>>> > >>> >> >> > >>>>>>> need to upgrade first to 3.4.latest, it is
>>> your
>>> > >>> >> >> decision.
>>> > >>> >> >> > >>> Definitely
>>> > >>> >> >> > >>>>> you
>>> > >>> >> >> > >>>>>>> should test it first, as suggested by the
>>> > others.
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> Kind regards,
>>> > >>> >> >> > >>>>>>> Mate
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> On Tue, Mar 24, 2020 at 12:29 PM Norbert
>>> Kalmar
>>> > >>> >> >> > >>>>>>> <nkal...@cloudera.com.invalid> wrote:
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>>> Hi,
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>> That guide is to upgrade to 3.5.0, which
>>> was
>>> > an
>>> > >>> >> alpha
>>> > >>> >> >> version.
>>> > >>> >> >> > >> A
>>> > >>> >> >> > >>>> lot
>>> > >>> >> >> > >>>>>> has
>>> > >>> >> >> > >>>>>>>> changed for the first stable release of
>>> 3.5.5
>>> > >>> and
>>> > >>> >> then
>>> > >>> >> >> a few
>>> > >>> >> >> > >>> more,
>>> > >>> >> >> > >>>>> even
>>> > >>> >> >> > >>>>>>>> rolling upgrade issues have been fixed
for
>>> > >>> 3.5.6.
>>> > >>> >> >> > >>>>>>>> This is a more up-to-date guide:
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >>
>>> > https://cwiki.apache.org/confluence/display/ZOOKEEPER/Upgrade+FAQ
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>> If you have done your testing (with prod
>>> > >>> snapshot!),
>>> > >>> >> >> then you
>>> > >>> >> >> > >> can
>>> > >>> >> >> > >>>>> skip
>>> > >>> >> >> > >>>>>>> 3.4
>>> > >>> >> >> > >>>>>>>> latest upgrade, but keep in mind we do
our
>>> > >>> >> >> recommendations for
>>> > >>> >> >> > >> a
>>> > >>> >> >> > >>>>>> reason.
>>> > >>> >> >> > >>>>>>>> There were issues reported and/or found
>>> during
>>> > >>> >> >> testing. Some
>>> > >>> >> >> > >> are
>>> > >>> >> >> > >>>>> fixed
>>> > >>> >> >> > >>>>>>> with
>>> > >>> >> >> > >>>>>>>> 3.5.6, some only happens if certain
>>> conditions
>>> > >>> stand
>>> > >>> >> >> > >>> (IOException:
>>> > >>> >> >> > >>>> No
>>> > >>> >> >> > >>>>>>>> snapshot found - mentioned in the guide,
>>> fixed
>>> > >>> in
>>> > >>> >> >> 3.5.6).
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>> So it is up to you, I would still
>>> recommend to
>>> > >>> do an
>>> > >>> >> >> 3.4
>>> > >>> >> >> > >> upgrade
>>> > >>> >> >> > >>>>> first,
>>> > >>> >> >> > >>>>>>> if
>>> > >>> >> >> > >>>>>>>> it's feasible.
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>> Regards,
>>> > >>> >> >> > >>>>>>>> Norbert
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>> On Tue, Mar 24, 2020 at 11:45 AM kuldeep
>>> > singh <
>>> > >>> >> >> > >>>>>>> kuldeep.sing...@gmail.com>
>>> > >>> >> >> > >>>>>>>> wrote:
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>>> Hi,
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> Current Zookeeper version :- 3.4.5
>>> > >>> >> >> > >>>>>>>>> Upgraded version :- 3.5.6
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> We are not going with 3.5.7. Our final
>>> > >>> decision is
>>> > >>> >> >> zookeeper
>>> > >>> >> >> > >>>>> version
>>> > >>> >> >> > >>>>>> is
>>> > >>> >> >> > >>>>>>>>> 3.5.6
>>> > >>> >> >> > >>>>>>>>> as per your reply first we need to move
>>> > latest
>>> > >>> >> >> version of
>>> > >>> >> >> > >>> 3.4.x,
>>> > >>> >> >> > >>>>> like
>>> > >>> >> >> > >>>>>>>> below
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> 3.4.5 -> 3.4.14 -> 3.5.6 (Correct me if
>>> I am
>>> > >>> wrong
>>> > >>> >> >> here)
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> But if We are not facing any problem
>>> that i
>>> > >>> have
>>> > >>> >> >> shared you
>>> > >>> >> >> > >>> that
>>> > >>> >> >> > >>>> we
>>> > >>> >> >> > >>>>>>> have
>>> > >>> >> >> > >>>>>>>>> set up of 3 node cluster where 2 node
>>> are on
>>> > >>> 3.5.6
>>> > >>> >> >> version
>>> > >>> >> >> > >> and
>>> > >>> >> >> > >>> 1
>>> > >>> >> >> > >>>>> node
>>> > >>> >> >> > >>>>>>> on
>>> > >>> >> >> > >>>>>>>>> 3.4.5, Everything is running fine and
>>> didn't
>>> > >>> get
>>> > >>> >> any
>>> > >>> >> >> issue,
>>> > >>> >> >> > >> So
>>> > >>> >> >> > >>>> what
>>> > >>> >> >> > >>>>>>> other
>>> > >>> >> >> > >>>>>>>>> problem we can face if we directly move
>>> to
>>> > >>> 3.5.6
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> Thanks,
>>> > >>> >> >> > >>>>>>>>> ---------------------
>>> > >>> >> >> > >>>>>>>>> Kuldeep Singh Budania
>>> > >>> >> >> > >>>>>>>>> Software Architect
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>> On Tue, Mar 24, 2020 at 3:58 PM Enrico
>>> > >>> Olivelli <
>>> > >>> >> >> > >>>>> eolive...@gmail.com
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>>>> wrote:
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>> Hi
>>> > >>> >> >> > >>>>>>>>>> You have to upgrade to latest 3.4.x
>>> > Zookeeper
>>> > >>> then
>>> > >>> >> >> you will
>>> > >>> >> >> > >>>>> upgrade
>>> > >>> >> >> > >>>>>>> to
>>> > >>> >> >> > >>>>>>>>>> 3.5.7.
>>> > >>> >> >> > >>>>>>>>>> All should run well without issues
>>> > >>> >> >> > >>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>> Enrico
>>> > >>> >> >> > >>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>> Il Mar 24 Mar 2020, 10:18 kuldeep singh
>>> <
>>> > >>> >> >> > >>>>> kuldeep.sing...@gmail.com
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>> ha
>>> > >>> >> >> > >>>>>>>>>> scritto:
>>> > >>> >> >> > >>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> Hi Team,
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> We are upgrading zookeeper from 3.4.5
>>> to
>>> > >>> 3.5.6. I
>>> > >>> >> >> have
>>> > >>> >> >> > >> set
>>> > >>> >> >> > >>>> up 3
>>> > >>> >> >> > >>>>>>> node
>>> > >>> >> >> > >>>>>>>>>>> cluster where 2 node are on 3.5.6
>>> version
>>> > >>> and 1
>>> > >>> >> >> node on
>>> > >>> >> >> > >>>> 3.4.5.
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> Everything is running fine and didn't
>>> get
>>> > any
>>> > >>> >> issue
>>> > >>> >> >> on my
>>> > >>> >> >> > >>>>> system.
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> but I found something on apache site
>>> that
>>> > >>> first
>>> > >>> >> we
>>> > >>> >> >> need
>>> > >>> >> >> > >> to
>>> > >>> >> >> > >>>>>> upgrade
>>> > >>> >> >> > >>>>>>>> on
>>> > >>> >> >> > >>>>>>>>>>> 3.4.6 than we can upgrade to 3.5.6. So
>>> is
>>> > it
>>> > >>> >> >> mandatory
>>> > >>> >> >> > >> to
>>> > >>> >> >> > >>> go
>>> > >>> >> >> > >>>>> on
>>> > >>> >> >> > >>>>>>>> 3.4.6
>>> > >>> >> >> > >>>>>>>>>>> first.
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> *Upgrading to 3.5.0*
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> Upgrading a running ZooKeeper ensemble
>>> to
>>> > >>> 3.5.0
>>> > >>> >> >> should be
>>> > >>> >> >> > >>>> done
>>> > >>> >> >> > >>>>>> only
>>> > >>> >> >> > >>>>>>>>> after
>>> > >>> >> >> > >>>>>>>>>>> upgrading your ensemble to the 3.4.6
>>> > release.
>>> > >>> >> Note
>>> > >>> >> >> that
>>> > >>> >> >> > >>> this
>>> > >>> >> >> > >>>> is
>>> > >>> >> >> > >>>>>>> only
>>> > >>> >> >> > >>>>>>>>>>> necessary for rolling upgrades (if
>>> you're
>>> > >>> fine
>>> > >>> >> with
>>> > >>> >> >> > >>> shutting
>>> > >>> >> >> > >>>>> down
>>> > >>> >> >> > >>>>>>> the
>>> > >>> >> >> > >>>>>>>>>>> system completely, you don't have to
go
>>> > >>> through
>>> > >>> >> >> 3.4.6).
>>> > >>> >> >> > >> If
>>> > >>> >> >> > >>>> you
>>> > >>> >> >> > >>>>>>>> attempt
>>> > >>> >> >> > >>>>>>>>> a
>>> > >>> >> >> > >>>>>>>>>>> rolling upgrade without going through
>>> 3.4.6
>>> > >>> (for
>>> > >>> >> >> example
>>> > >>> >> >> > >>> from
>>> > >>> >> >> > >>>>>>> 3.4.5),
>>> > >>> >> >> > >>>>>>>>> you
>>> > >>> >> >> > >>>>>>>>>>> may get the following error:
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> 2013-01-30 11:32:10,663 [myid:2] -
INFO
>>> > >>> >> [localhost/
>>> > >>> >> >> > >>>>>> 127.0.0.1:2784
>>> > >>> >> >> > >>>>>>>>>>> :QuorumCnxManager$Listener@498] -
>>> Received
>>> > >>> >> >> connection
>>> > >>> >> >> > >>>> request
>>> > >>> >> >> > >>>>> /
>>> > >>> >> >> > >>>>>>>>>>> 127.0.0.1:60876
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> 2013-01-30 11:32:10,663 [myid:2] -
WARN
>>> > >>> >> [localhost/
>>> > >>> >> >> > >>>>>> 127.0.0.1:2784
>>> > >>> >> >> > >>>>>>>>>>> :QuorumCnxManager@349] - Invalid
>>> server
>>> > id:
>>> > >>> >> -65536
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> During a rolling upgrade, each server
>>> is
>>> > >>> taken
>>> > >>> >> down
>>> > >>> >> >> in
>>> > >>> >> >> > >> turn
>>> > >>> >> >> > >>>> and
>>> > >>> >> >> > >>>>>>>>> rebooted
>>> > >>> >> >> > >>>>>>>>>>> with the new 3.5.0 binaries. Before
>>> > starting
>>> > >>> the
>>> > >>> >> >> server
>>> > >>> >> >> > >>> with
>>> > >>> >> >> > >>>>>> 3.5.0
>>> > >>> >> >> > >>>>>>>>>>> binaries, we highly recommend updating
>>> the
>>> > >>> >> >> configuration
>>> > >>> >> >> > >>> file
>>> > >>> >> >> > >>>>> so
>>> > >>> >> >> > >>>>>>> that
>>> > >>> >> >> > >>>>>>>>> all
>>> > >>> >> >> > >>>>>>>>>>> server statements "server.x=..."
>>> contain
>>> > >>> client
>>> > >>> >> >> ports
>>> > >>> >> >> > >> (see
>>> > >>> >> >> > >>>> the
>>> > >>> >> >> > >>>>>>>> section
>>> > >>> >> >> > >>>>>>>>>>> Specifying
>>> > >>> >> >> > >>>>>>>>>>> the client port). As explained earlier
>>> you
>>> > >>> may
>>> > >>> >> >> leave the
>>> > >>> >> >> > >>>>>>>> configuration
>>> > >>> >> >> > >>>>>>>>>> in a
>>> > >>> >> >> > >>>>>>>>>>> single file, as well as leave the
>>> > >>> >> >> > >>>> clientPort/clientPortAddress
>>> > >>> >> >> > >>>>>>>>> statements
>>> > >>> >> >> > >>>>>>>>>>> (although if you specify client ports
>>> in
>>> > the
>>> > >>> new
>>> > >>> >> >> format,
>>> > >>> >> >> > >>>> these
>>> > >>> >> >> > >>>>>>>>> statements
>>> > >>> >> >> > >>>>>>>>>>> are now redundant).
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> Could you please let me know about
this
>>> > case.
>>> > >>> >> >> Appreciate
>>> > >>> >> >> > >> if
>>> > >>> >> >> > >>>>>> respond
>>> > >>> >> >> > >>>>>>>>> soon.
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>> Thanks,
>>> > >>> >> >> > >>>>>>>>>>> ---------------------
>>> > >>> >> >> > >>>>>>>>>>> Kuldeep Singh Budania
>>> > >>> >> >> > >>>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>>
>>> > >>> >> >> > >>>>>>>>>
>>> > >>> >> >> > >>>>>>>>
>>> > >>> >> >> > >>>>>>>
>>> > >>> >> >> > >>>>>>
>>> > >>> >> >> > >>>>>
>>> > >>> >> >> > >>>>
>>> > >>> >> >> > >>>
>>> > >>> >> >> > >>
>>> > >>> >> >> >
>>> > >>> >> >> >
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >> ________________________________
>>> > >>> >> >>
>>> > >>> >> >> CONFIDENTIALITY & PRIVACY NOTICE
>>> > >>> >> >> This e-mail (including any attachments) is strictly
>>> > >>> confidential
>>> > >>> >> and
>>> > >>> >> >> may also contain privileged information. If you are not the
>>> > >>> intended
>>> > >>> >> >> recipient you are not authorised to read, print, save,
>>> process or
>>> > >>> >> disclose
>>> > >>> >> >> this message. If you have received this message by mistake,
>>> > please
>>> > >>> >> inform
>>> > >>> >> >> the sender immediately and destroy this e-mail, its
>>> attachments
>>> > >>> and any
>>> > >>> >> >> copies. Any use, distribution, reproduction or disclosure by
>>> any
>>> > >>> person
>>> > >>> >> >> other than the intended recipient is strictly prohibited and
>>> the
>>> > >>> person
>>> > >>> >> >> responsible may incur in penalties.
>>> > >>> >> >> The use of this e-mail is only for professional
purposes;
>>> > >>> there is
>>> > >>> >> no
>>> > >>> >> >> guarantee that the correspondence towards this e-mail will
be
>>> > read
>>> > >>> >> only by
>>> > >>> >> >> the recipient, because, under certain circumstances, there
>>> may
>>> > be a
>>> > >>> >> need to
>>> > >>> >> >> access this email by third subjects belonging to the
Company.
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >> ________________________________
>>> > >>> >> >>
>>> > >>> >> >> CONFIDENTIALITY & PRIVACY NOTICE
>>> > >>> >> >> This e-mail (including any attachments) is strictly
>>> confidential
>>> > >>> and
>>> > >>> >> may
>>> > >>> >> >> also contain privileged information. If you are not the
>>> intended
>>> > >>> >> recipient
>>> > >>> >> >> you are not authorised to read, print, save, process or
>>> disclose
>>> > >>> this
>>> > >>> >> >> message. If you have received this message by mistake,
please
>>> > >>> inform
>>> > >>> >> the
>>> > >>> >> >> sender immediately and destroy this e-mail, its attachments
>>> and
>>> > any
>>> > >>> >> copies.
>>> > >>> >> >> Any use, distribution, reproduction or disclosure by any
>>> person
>>> > >>> other
>>> > >>> >> than
>>> > >>> >> >> the intended recipient is strictly prohibited and the person
>>> > >>> >> responsible
>>> > >>> >> >> may incur in penalties.
>>> > >>> >> >> The use of this e-mail is only for professional purposes;
>>> there
>>> > is
>>> > >>> no
>>> > >>> >> >> guarantee that the correspondence towards this e-mail will
be
>>> > read
>>> > >>> >> only by
>>> > >>> >> >> the recipient, because, under certain circumstances, there
>>> may
>>> > be a
>>> > >>> >> need to
>>> > >>> >> >> access this email by third subjects belonging to the
Company.
>>> > >>> >> >>
>>> > >>> >> >
>>> > >>> >>
>>> > >>> >
>>> > >>>
>>> > >>
>>> >
>>>
>>
________________________________
CONFIDENTIALITY & PRIVACY NOTICE
This e-mail (including any attachments) is strictly confidential and may also
contain privileged information. If you are not the intended recipient you are
not authorised to read, print, save, process or disclose this message. If you
have received this message by mistake, please inform the sender immediately and
destroy this e-mail, its attachments and any copies. Any use, distribution,
reproduction or disclosure by any person other than the intended recipient is
strictly prohibited and the person responsible may incur in penalties.
The use of this e-mail is only for professional purposes; there is no guarantee
that the correspondence towards this e-mail will be read only by the recipient,
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