PDavid commented on PR #2329:
URL: https://github.com/apache/zookeeper/pull/2329#issuecomment-4022766759
> @PDavid any chance of using the jdk8 classifier of jline? The newer
versions have features that only work with java 22+ and this trips up the
org.codehaus.mojo.extraenforcer.dependencies.EnforceBytecodeVersion maven
plugin with zookeeper.
Hi @vjanelle,
Thanks for bringing this up. :+1:
Are you sure that `org.jline:jline:3.25.1` does not work with JDK 8?
I checked that in 3.25.1 jar we have class file major version 52 which is
Java 8:
```
$ CLASS_NAME=$(unzip -l
/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jline-3.25.1.jar
| grep .class | head -n 1 | awk '{print $4}')
$ echo $CLASS_NAME
org/jline/builtins/Commands$Colors.class
$ javap -v -cp
/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jline-3.25.1.jar
${CLASS_NAME%.*} | grep "major"
major version: 52
```
Later JLine versions starting from 3.26.0 has the mentioned jdk8 classifier
but 3.25.1 there is no such classifier.
I also compiled ZooKeeper latest master and was able to use zkCli using
1.8.0_422 Temurin JDK:
```
$ bin/zkCli.sh -server 127.0.0.1:2181
Connecting to 127.0.0.1:2181
2026-03-09 11:17:01,530 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:zookeeper.version=3.10.0-SNAPSHOT-2f0d22bcebf33fba9a45b15454e89f116197f918-dirty,
built on 2026-03-09 10:15 UTC
2026-03-09 11:17:01,534 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:host.name=paksyd-5680-ubuntu
2026-03-09 11:17:01,534 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.version=1.8.0_422
2026-03-09 11:17:01,534 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.vendor=Temurin
2026-03-09 11:17:01,534 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.home=/home/david/.sdkman/candidates/java/8.0.422-tem/jre
2026-03-09 11:17:01,535 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.class.path=/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/classes:/home/david/projects/zookeeper/bin/../zookeeper-server/target/classes:/home/david/projects/zookeeper/bin/../build/classes:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/zookeeper-jute-3.10.0-SNAPSHOT.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/zookeeper-3.10.0-SNAPSHOT.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/slf4j-api-2.0.13.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-otel-agent-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/targe
t/lib/prometheus-metrics-tracer-otel-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-initializer-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-tracer-common-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-model-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-instrumentation-jvm-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exposition-textformats-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exposition-formats-1.3.10.jar:/home/david/projects/zookeeper/b
in/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-servlet-javax-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-httpserver-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-exporter-common-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-core-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/prometheus-metrics-config-1.3.10.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/opentest4j-1.2.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/objenesis-3.3.jar:/home/david/projects/zookee
per/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-native-unix-common-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-native-epoll-4.1.130.Final-linux-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-classes-epoll-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-transport-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-classes-2.0.74.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-windows-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-me
trics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-aarch_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-aarch_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-tcnative-boringssl-static-2.0.74.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-resolver-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-handler-
4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-common-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-codec-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/netty-buffer-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/mockito-core-4.9.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/logback-core-1.3.15.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/logback-classic-1.3.15.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-suite-api-1.6.2.jar:/home/david/projects/zookeeper/bin/.
./zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-runner-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-launcher-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-engine-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-platform-commons-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-jupiter-engine-5.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-jupiter-api-5.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/junit-4.13.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus
-metrics/target/lib/jetty-util-ajax-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-util-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-servlet-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-server-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-security-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-io-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/jetty-http-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib
/javax.servlet-api-3.1.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/hamcrest-core-1.3.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/dnsjava-3.5.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/commons-io-2.17.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/byte-buddy-agent-1.12.16.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/byte-buddy-1.12.16.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/audience-annotations-0.12.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-metrics-providers/zookeeper-prometheus-metrics/target/lib/apiguardian-api-1.1.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server
/target/lib/zookeeper-jute-3.10.0-SNAPSHOT.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/tools-0.25.4.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/token-provider-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/spotbugs-annotations-4.0.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/snappy-java-1.1.10.5.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/slf4j-api-2.0.13.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/opentest4j-1.2.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/objenesis-3.3.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/nimbus-jose-jwt-4.41.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-native-unix-common-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-native-epoll-4.1.130.Final-linux-x86
_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-classes-epoll-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-transport-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-classes-2.0.74.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-windows-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-osx-aarch_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-x86_64.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final-linux-aarch_64.jar:/home/david/projects/zookee
per/bin/../zookeeper-server/target/lib/netty-tcnative-boringssl-static-2.0.74.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-resolver-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-handler-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-common-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-codec-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/netty-buffer-4.1.130.Final.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/mockito-inline-4.9.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/mockito-core-4.9.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/metrics-core-4.1.12.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/logback-core-1.3.15.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/targe
t/lib/logback-classic-1.3.15.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerby-xdr-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerby-util-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerby-pkix-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerby-config-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerby-asn1-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-util-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-simplekdc-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-server-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-identity-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-crypto-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-core-2.0.0.jar
:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-common-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-client-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/kerb-admin-2.0.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jvm-driver-9.4.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jvm-driver-8.14.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-suite-api-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-runner-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-launcher-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-engine-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-platform-commons-1.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/
lib/junit-jupiter-params-5.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-jupiter-engine-5.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-jupiter-api-5.6.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/junit-4.13.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jsr305-3.0.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/json-smart-2.3.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jmockit-1.48.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jline-3.25.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-util-ajax-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-util-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-servlet-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server
/target/lib/jetty-server-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-security-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-io-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-http-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jetty-client-9.4.58.v20250814.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jcip-annotations-1.0-1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/javax.servlet-api-3.1.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jackson-databind-2.18.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jackson-core-2.18.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/jackson-annotations-2.18.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-library-2.2.
jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-core-2.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/hamcrest-2.2.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/dnsjava-3.5.1.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/core-12.62.5.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/commons-io-2.17.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/commons-collections4-4.4.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/commons-cli-1.5.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/byte-buddy-agent-1.12.16.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/byte-buddy-1.12.16.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/bcutil-jdk18on-1.78.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/bcprov-jdk18on-1.78.jar:/home/david/projects
/zookeeper/bin/../zookeeper-server/target/lib/bcpkix-jdk18on-1.78.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/audience-annotations-0.12.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/asm-5.0.4.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/apiguardian-api-1.1.0.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/target/lib/accessors-smart-1.2.jar:/home/david/projects/zookeeper/bin/../build/lib/*.jar:/home/david/projects/zookeeper/bin/../lib/*.jar:/home/david/projects/zookeeper/bin/../zookeeper-*.jar:/home/david/projects/zookeeper/bin/../zookeeper-server/src/main/resources/lib/*.jar:/home/david/projects/zookeeper/bin/../conf:
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.io.tmpdir=/tmp
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:java.compiler=<NA>
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:os.name=Linux
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:os.arch=amd64
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:os.version=6.17.0-14-generic
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:user.name=david
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:user.home=/home/david
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:user.dir=/home/david/projects/zookeeper
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:jvm.memory.free=213MB
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:jvm.memory.max=245MB
2026-03-09 11:17:01,552 [myid:] - INFO [main:o.a.z.Environment@98] - Client
environment:jvm.memory.total=245MB
2026-03-09 11:17:01,553 [myid:] - INFO [main:o.a.z.ZooKeeper@1123] -
Initiating client connection, connectString=127.0.0.1:2181 sessionTimeout=30000
watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@18bf3d14
2026-03-09 11:17:01,558 [myid:] - INFO [main:o.a.z.c.X509Util@85] - Setting
-D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated
TLS renegotiation
2026-03-09 11:17:01,667 [myid:] - INFO [main:o.a.z.c.X509Util@109] -
Default TLS protocol is TLSv1.3, supported TLS protocols are [TLSv1.3, TLSv1.2,
TLSv1.1, TLSv1, SSLv3, SSLv2Hello]
2026-03-09 11:17:01,669 [myid:] - INFO
[main:o.a.z.c.HostConnectionManager@127] - HostConnectionManager initialized
with 1 servers
2026-03-09 11:17:01,674 [myid:] - INFO [main:o.a.z.ClientCnxnSocket@235] -
jute.maxbuffer value is 1048575 Bytes
2026-03-09 11:17:01,678 [myid:] - INFO [main:o.a.z.ClientCnxn@1723] -
zookeeper.request.timeout value is 0. feature enabled=false
Welcome to ZooKeeper!
JLine support is enabled
2026-03-09 11:17:01,682 [myid:127.0.0.1:2181] - INFO
[main-SendThread(127.0.0.1:2181):o.a.z.ClientCnxn$SendThread@1154] - Opening
socket connection to server /127.0.0.1:2181.
2026-03-09 11:17:01,682 [myid:127.0.0.1:2181] - INFO
[main-SendThread(127.0.0.1:2181):o.a.z.ClientCnxn$SendThread@1156] - SASL
config status: Will not attempt to authenticate using SASL (unknown error)
2026-03-09 11:17:01,686 [myid:127.0.0.1:2181] - INFO
[main-SendThread(127.0.0.1:2181):o.a.z.ClientCnxn$SendThread@1007] - Socket
connection established, initiating session, client: /127.0.0.1:35420, server:
/127.0.0.1:2181
2026-03-09 11:17:01,693 [myid:127.0.0.1:2181] - INFO
[main-SendThread(127.0.0.1:2181):o.a.z.ClientCnxn$SendThread@1427] - Session
establishment complete on server /127.0.0.1:2181, session id =
0x10015955b010002, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null zxid: -1
[zk: 127.0.0.1:2181(CONNECTED) 0] ls
ls [-s] [-w] [-R] path
[zk: 127.0.0.1:2181(CONNECTED) 1] ls /
[zookeeper]
[zk: 127.0.0.1:2181(CONNECTED) 2] ls /zookeeper
[config, quota]
[zk: 127.0.0.1:2181(CONNECTED) 3]
JLine support is disabled
2026-03-09 11:18:04,946 [myid:] - INFO [main:o.a.z.u.ServiceUtils@45] -
Exiting JVM with code 0
$
```
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