[
https://issues.apache.org/jira/browse/SOLR-12727?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hoss Man reopened SOLR-12727:
-----------------------------
There's a big uptick in SaslZkACLProviderTest failures from [~thetaphi]'s
jenkins server (that i can't reproduce locally) lately that i think is caused
by this ZK upgrade?
Here's an example of what a "good" run looks like on my laptop (hostname
"tray")...
{noformat}
[junit4] Started J0 PID(995@tray).
[junit4] Suite: org.apache.solr.cloud.SaslZkACLProviderTest
[junit4] 2> Creating dataDir:
/home/hossman/lucene/alt_dev/solr/build/solr-core/test/J0/temp/solr.cloud.SaslZkACLProviderTest_B413507B747C128B-001/init-core-data-001
[junit4] 2> 1846 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true)
w/NUMERIC_DOCVALUES_SYSPROP=true
[junit4] 2> 1896 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ] o.e.j.u.log
Logging initialized @1929ms to org.eclipse.jetty.util.log.Slf4jLog
[junit4] 2> 1904 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 Randomized ssl (false) and clientAuth (true) via:
@org.apache.solr.util.RandomizeSSL(reason=, ssl=NaN, value=NaN, clientAuth=NaN)
[junit4] 2> 1912 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks:
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
[junit4] 2> 1930 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.SolrTestCaseJ4 ###Starting testSaslZkACLProvider
[junit4] 2> 1931 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.SaslZkACLProviderTest ####SETUP_START testSaslZkACLProvider
[junit4] 2> 1931 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.SaslZkACLProviderTest ZooKeeper
dataDir:/home/hossman/lucene/alt_dev/solr/build/solr-core/test/J0/temp/solr.cloud.SaslZkACLProviderTest_B413507B747C128B-001/tempDir-002/zookeeper/server1/data
[junit4] 2> 7348 WARN
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.d.s.c.DefaultDirectoryService You didn't change the admin password of
directory service instance 'DefaultKrbServer'. Please update the admin
password as soon as possible to prevent a possible security breach.
[junit4] 2> 7953 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
[junit4] 2> 7956 INFO (ZkTestServer Run Thread) [ ]
o.a.s.c.ZkTestServer client port:0.0.0.0/0.0.0.0:0
[junit4] 2> 7956 INFO (ZkTestServer Run Thread) [ ]
o.a.s.c.ZkTestServer Starting server
[junit4] 2> 8457 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer start zk server on port:59021
[junit4] 2> 8462 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer parse host and port list: 127.0.0.1:59021
[junit4] 2> 8463 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer connecting to 127.0.0.1 59021
[junit4] 2> 8682 INFO (zkConnectionManagerCallback-3-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8703 INFO (zkConnectionManagerCallback-5-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8717 INFO (zkConnectionManagerCallback-7-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8840 INFO (zkConnectionManagerCallback-9-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8855 INFO (zkConnectionManagerCallback-11-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8865 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.SaslZkACLProviderTest ####SETUP_END testSaslZkACLProvider
[junit4] 2> 8870 INFO (zkConnectionManagerCallback-13-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8943 INFO (zkConnectionManagerCallback-15-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8963 INFO (zkConnectionManagerCallback-17-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8974 INFO (zkConnectionManagerCallback-19-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 8998 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer Shutting down ZkTestServer.
[junit4] 2> 9002 WARN (Thread-2) [ ] o.a.z.Login TGT renewal thread
has been interrupted and will exit.
[junit4] 2> 9008 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer parse host and port list: 127.0.0.1:59021
[junit4] 2> 9008 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer connecting to 127.0.0.1 59021
[junit4] 2> 9345 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.SolrTestCaseJ4 ###Ending testSaslZkACLProvider
{noformat}
Here's what a typical jenkins log from Uwe looks like (note the VM's hostname
and how it pops up later in WARN/ERROR logs from ZK) ...
{noformat}
[junit4] Started J0 PID(26641@serv1-vm3).
...
[junit4] Suite: org.apache.solr.cloud.SaslZkACLProviderTest
[junit4] 2> Creating dataDir:
/export/home/jenkins/workspace/Lucene-Solr-master-Solaris/solr/build/solr-core/test/J0/temp/solr.cloud.SaslZkACLProviderTest_B413507B747C128B-001/init-core-data-001
[junit4] 2> 2980 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 Using PointFields (NUMERIC_POINTS_SYSPROP=true)
w/NUMERIC_DOCVALUES_SYSPROP=true
[junit4] 2> 3069 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ] o.e.j.u.log
Logging initialized @3155ms to org.eclipse.jetty.util.log.Slf4jLog
[junit4] 2> 3091 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 Randomized ssl (false) and clientAuth (true) via:
@org.apache.solr.util.RandomizeSSL(reason=, value=NaN
, ssl=NaN, clientAuth=NaN)
[junit4] 2> 3105 INFO
(SUITE-SaslZkACLProviderTest-seed#[B413507B747C128B]-worker) [ ]
o.a.s.SolrTestCaseJ4 SecureRandom sanity checks:
test.solr.allowed.securerandom=null & java.security.egd=file:/dev/./urandom
[junit4] 2> 3314 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.SolrTestCaseJ4 ###Starting testSaslZkACLProvider
[junit4] 2> 3314 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.SaslZkACLProviderTest ####SETUP_START testSaslZkACLProvider
[junit4] 2> 3316 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.SaslZkACLProviderTest ZooKeeper
dataDir:/export/home/jenkins/workspace/Lucene-Solr-master-Solaris/solr
/build/solr-core/test/J0/temp/solr.cloud.SaslZkACLProviderTest_B413507B747C128B-001/tempDir-002/zookeeper/server1/data
[junit4] 2> 10586 WARN
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.d.s.c.DefaultDirectoryService You didn't change the admin password of
directory service instance 'Default
KrbServer'. Please update the admin password as soon as possible to prevent a
possible security breach.
[junit4] 2> 11518 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer STARTING ZK TEST SERVER
[junit4] 2> 11521 INFO (ZkTestServer Run Thread) [ ]
o.a.s.c.ZkTestServer client port:0.0.0.0/0.0.0.0:0
[junit4] 2> 11522 INFO (ZkTestServer Run Thread) [ ]
o.a.s.c.ZkTestServer Starting server
[junit4] 2> 12130 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer start zk server on port:60381
[junit4] 2> 12133 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer parse host and port list: 127.0.0.1:60381
[junit4] 2> 12133 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer connecting to 127.0.0.1 60381
[junit4] 2> 12326 INFO (zkConnectionManagerCallback-3-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 12347 INFO (zkConnectionManagerCallback-5-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 12357 INFO (zkConnectionManagerCallback-7-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient has connected
[junit4] 2> 12507 WARN (NioProcessor-3) [ ] o.a.d.s.p.s.k.StoreUtils
No server entry found for kerberos principal name
zookeeper/[email protected]
[junit4] 2> 12507 WARN (NioProcessor-3) [ ] o.a.d.s.KERBEROS_LOG No
server entry found for kerberos principal name zookeeper/[email protected]
[junit4] 2> 12508 WARN (NioProcessor-3) [ ]
o.a.d.s.k.p.KerberosProtocolHandler Server not found in Kerberos database (7)
[junit4] 2> 12508 WARN (NioProcessor-3) [ ] o.a.d.s.KERBEROS_LOG
Server not found in Kerberos database (7)
[junit4] 2> 12511 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.c.ZooKeeperSaslClient An error:
(java.security.PrivilegedActionException: j
avax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Server not found in Kerberos
database (7) - Server not found in Kerberos database)]) occurred
when evaluating Zookeeper Quorum Member's received SASL token. Zookeeper
Client will go to AUTH_FAILED state.
[junit4] 2> 12511 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.ClientCnxn SASL authentication with Zookeeper Quorum member
failed: javax.s
ecurity.sasl.SaslException: An error: (java.security.PrivilegedActionException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Server not f
ound in Kerberos database (7) - Server not found in Kerberos database)])
occurred when evaluating Zookeeper Quorum Member's received SASL token.
Zookeeper Client will go to AUTH_FAILED state.
[junit4] 2> 12512 WARN (zkConnectionManagerCallback-3-thread-1) [ ]
o.a.s.c.c.ConnectionManager Watcher
org.apache.solr.common.cloud.ConnectionManager@50d68d5e name:
ZooKeeperConnection Watcher:127.0.0.1:60381 g
ot event WatchedEvent state:AuthFailed type:None path:null path: null type: None
[junit4] 2> 12512 WARN (zkConnectionManagerCallback-3-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient received AuthFailed
[junit4] 2> 12522 WARN (NioProcessor-1) [ ] o.a.d.s.p.s.k.StoreUtils
No server entry found for kerberos principal name
zookeeper/[email protected]
[junit4] 2> 12522 WARN (NioProcessor-1) [ ] o.a.d.s.KERBEROS_LOG No
server entry found for kerberos principal name zookeeper/[email protected]
[junit4] 2> 12522 WARN (NioProcessor-1) [ ]
o.a.d.s.k.p.KerberosProtocolHandler Server not found in Kerberos database (7)
[junit4] 2> 12527 WARN (NioProcessor-1) [ ] o.a.d.s.KERBEROS_LOG
Server not found in Kerberos database (7)
[junit4] 2> 12529 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.c.ZooKeeperSaslClient An error:
(java.security.PrivilegedActionException: j
avax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Server not found in Kerberos
database (7) - Server not found in Kerberos database)]) occurred
when evaluating Zookeeper Quorum Member's received SASL token. Zookeeper
Client will go to AUTH_FAILED state.
[junit4] 2> 12529 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.ClientCnxn SASL authentication with Zookeeper Quorum member
failed: javax.s
ecurity.sasl.SaslException: An error: (java.security.PrivilegedActionException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Server not f
ound in Kerberos database (7) - Server not found in Kerberos database)])
occurred when evaluating Zookeeper Quorum Member's received SASL token.
Zookeeper Client will go to AUTH_FAILED state.
[junit4] 2> 12531 WARN (zkConnectionManagerCallback-7-thread-1) [ ]
o.a.s.c.c.ConnectionManager Watcher
org.apache.solr.common.cloud.ConnectionManager@d957d47 name:
ZooKeeperConnection Watcher:127.0.0.1:60381 go
t event WatchedEvent state:AuthFailed type:None path:null path: null type: None
[junit4] 2> 12531 WARN (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [ ]
o.a.z.s.NIOServerCnxn Unable to read additional data from client sessionid
0x1009d198b040002, likely client has closed socket
[junit4] 2> 12531 WARN (zkConnectionManagerCallback-7-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient received AuthFailed
[junit4] 2> 12541 WARN (NioProcessor-2) [ ] o.a.d.s.p.s.k.StoreUtils
No server entry found for kerberos principal name
zookeeper/[email protected]
[junit4] 2> 12542 WARN (NioProcessor-2) [ ] o.a.d.s.KERBEROS_LOG No
server entry found for kerberos principal name zookeeper/[email protected]
[junit4] 2> 12542 WARN (NioProcessor-2) [ ]
o.a.d.s.k.p.KerberosProtocolHandler Server not found in Kerberos database (7)
[junit4] 2> 12542 WARN (NioProcessor-2) [ ] o.a.d.s.KERBEROS_LOG
Server not found in Kerberos database (7)
[junit4] 2> 12543 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.c.ZooKeeperSaslClient An error:
(java.security.PrivilegedActionException: javax.security.sasl.SaslException:
GSS initiate failed [Caused by GSSException: No valid credentials provided
(Mechanism level: Server not found in Kerberos database (7) - Server not found
in Kerberos database)]) occurred when evaluating Zookeeper Quorum Member's
received SASL token. Zookeeper Client will go to AUTH_FAILED state.
[junit4] 2> 12543 ERROR
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]-SendThread(serv1-vm3:60381))
[ ] o.a.z.ClientCnxn SASL authentication with Zookeeper Quorum member
failed: javax.security.sasl.SaslException: An error:
(java.security.PrivilegedActionException: javax.security.sasl.SaslException:
GSS initiate failed [Caused by GSSException: No valid credentials provided
(Mechanism level: Server not found in Kerberos database (7) - Server not found
in Kerberos database)]) occurred when evaluating Zookeeper Quorum Member's
received SASL token. Zookeeper Client will go to AUTH_FAILED state.
[junit4] 2> 12545 WARN (zkConnectionManagerCallback-5-thread-1) [ ]
o.a.s.c.c.ConnectionManager Watcher
org.apache.solr.common.cloud.ConnectionManager@3de4e07d name:
ZooKeeperConnection Watcher:127.0.0.1:60381/solr got event WatchedEvent
state:AuthFailed type:None path:null path: null type: None
[junit4] 2> 12545 WARN (zkConnectionManagerCallback-5-thread-1) [ ]
o.a.s.c.c.ConnectionManager zkClient received AuthFailed
[junit4] 2> 12649 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer Shutting down ZkTestServer.
[junit4] 2> 12653 WARN (NIOServerCxn.Factory:0.0.0.0/0.0.0.0:0) [ ]
o.a.z.s.NIOServerCnxnFactory Ignoring unexpected runtime exception
[junit4] 2> java.nio.channels.CancelledKeyException: null
[junit4] 2> at
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73) ~[?:1.8.0_191]
[junit4] 2> at
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87) ~[?:1.8.0_191]
[junit4] 2> at
org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:205)
[zookeeper-3.4.13.jar:3.4.13-2d71af4dbe22557fda74f9a9b4309b15a7487f03]
[junit4] 2> at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
[junit4] 2> 12672 WARN (Thread-2) [ ] o.a.z.Login TGT renewal thread
has been interrupted and will exit.
[junit4] 2> 12676 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer parse host and port list: 127.0.0.1:60381
[junit4] 2> 12676 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.c.ZkTestServer connecting to 127.0.0.1 60381
[junit4] 2> 13021 INFO
(TEST-SaslZkACLProviderTest.testSaslZkACLProvider-seed#[B413507B747C128B]) [
] o.a.s.SolrTestCaseJ4 ###Ending testSaslZkACLProvider
[junit4] 2> NOTE: reproduce with: ant test
-Dtestcase=SaslZkACLProviderTest -Dtests.method=testSaslZkACLProvider
-Dtests.seed=B413507B747C128B -Dtests.slow=true -Dtests.badapples=true
-Dtests.locale=ms -Dtests.timezone=Etc/GMT-14 -Dtests.asserts=true
-Dtests.file.encoding=US-ASCII
[junit4] ERROR 9.76s J0 | SaslZkACLProviderTest.testSaslZkACLProvider <<<
[junit4] > Throwable #1:
org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode =
AuthFailed for /solr
[junit4] > at
__randomizedtesting.SeedInfo.seed([B413507B747C128B:B0E706A3ED38B185]:0)
[junit4] > at
org.apache.zookeeper.KeeperException.create(KeeperException.java:126)
[junit4] > at
org.apache.zookeeper.KeeperException.create(KeeperException.java:54)
[junit4] > at
org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:792)
[junit4] > at
org.apache.solr.common.cloud.SolrZkClient.lambda$makePath$8(SolrZkClient.java:545)
[junit4] > at
org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:71)
[junit4] > at
org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:544)
[junit4] > at
org.apache.solr.common.cloud.SolrZkClient.makePath(SolrZkClient.java:436)
[junit4] > at
org.apache.solr.cloud.SaslZkACLProviderTest.setUp(SaslZkACLProviderTest.java:83)
[junit4] > at java.lang.Thread.run(Thread.java:748)
{noformat}
...it seems like something changed in how the ZK client/server are being
initialized that causes it to pick up the hostname of the server? maybe this is
another situation where the {{/etc/hosts}} of the machine running the tests can
affect things in ZK w/o us realizing/intending in the solr tests?
On my machine...
{noformat}
hossman@tray:~/lucene/dev/solr/core [master] $ cat /etc/hostname
tray
hossman@tray:~/lucene/dev/solr/core [master] $ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 tray
192.168.1.150 scanner # scanner / printer
192.168.1.222 brick
192.168.1.224 otter
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
{noformat}
[~thetaphi]: can you share what the hosts/hostname files look like on the VMs
where your jenkins machines run the tests?
> Upgrade ZooKeeper dependency to 3.4.13
> --------------------------------------
>
> Key: SOLR-12727
> URL: https://issues.apache.org/jira/browse/SOLR-12727
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 7.4
> Reporter: Shawn Heisey
> Assignee: Erick Erickson
> Priority: Major
> Fix For: master (8.0), 7.7
>
> Attachments: SOLR-12727.patch, SOLR-12727.patch, SOLR-12727.patch,
> SOLR-12727.patch, SOLR-12727.patch, SOLR-12727.patch
>
>
> Upgrade ZK dependency to 3.4.13. This fixes ZOOKEEPER-2184 which will make
> the ZK client re-resolve the server hostnames when a connection fails. This
> will fix issues where a failed ZK container is replaced with a new one that
> has a different IP address and DNS gets updated with the new address.
> Typically these upgrades do not require code changes, but that should be
> verified.
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