What happened?   Starting up a ZooKeeper server in a Kerberized CDP-DC 7.0.3 cluster failed with the logs below.    2020-03-30 12:23:10,251 ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain: Unexpected exception, exiting abnormally java.io.IOException: Could not configure server because SASL configuration did not allow the  ZooKeeper server to authenticate itself properly: javax.security.auth.login.LoginException: Message stream modified (41)         at org.apache.zookeeper.server.ServerCnxnFactory.configureSaslLogin(ServerCnxnFactory.java:243)         at org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:646)         at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:148)         at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:123)         at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:82)   The JDK for this environment is OpenJDK 1.8.0_242.   # java -version openjdk version "1.8.0_242" OpenJDK Runtime Environment (build 1.8.0_242-b08) OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)   Solution   Removing the line of renew_lifetime in /etc/krb5.conf. Removing this line means to use the default value, 0, for renew_lifetime. Thus, it may also need to specify renew_lifetime when running kinit command.   See also   http://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/201909.mbox/%3CCAKRKJ1O3yrYKDZ=WhU=i6A+zqxFnUidxvwQzNCTW0mnEv2WFPA@mail.gmail.com%3E On this page, Akira Ajisaka, one of Hadoop PMCs, described the solution. He also mentioned a related OpenJDK's JIRA ticket.   https://bugs.centos.org/view.php?id=17000 This page also introduced the same solution. Additionally, this page showed another solution, setting sun.security.krb5.disableReferrals=true in java.security file. But in my case, this solution didn't work.   https://my.cloudera.com/knowledge/Cloudera-Customer-Advisory-Servers-with-Kerberos-enabled-stop?id=292027 This is a related article from the Cloudera Knowledge Base. It also describes sun.security.krb5.disableReferrals=true as its workaround.   ... View more

How do I delete an Atlas tag which is associated with entities those are already deleted? I found that I couldn't delete an Atlas tag named "mytag" and when I tried to delete that tag I saw "Given type mytag has references". However, "mytag" was not associated with any entities. Then I noticed "Show historical entities" checkbox and I checked the checkbox, then an entity already deleted appeared. I thought I could delete "mytag" after deleting the association between "mytag" and that entity, but I couldn't find the way to remove that association. ... View more