hi all   we are using the following HDP cluster with ambari ,   list of nodes and their RHEL version   3 masters machines ( with namenode & resource manager ) , installed on RHEL 7.2 312 DATA-NODES machines , installed on RHEL 7.2 5 kafka machines , installed on RHEL 7.2   now we want to add the following machines to the cluster but with RHEL 7.5   85 DATA-NODES machines , should be installed on RHEL 7.5 version 2 kafka brokers machines , should be installed on RHEL 7.5 version   so my question is   can we mix in HDP cluster RHEL 7.2 with RHEL  7.5 version ?           ... View more

hi all     when we look on https://supportmatrix.hortonworks.com/   And choose the RHEL 7.7    HDP or AMBARI versions are not marked from some unclear reason!   so we cant captured the HDP or ambari version for RHEL 7.7   is it problem in support-matrix page ?  or something else ?   any way if we want to use RHEL 7.7   what are the HDP and AMBARI Versions? that fit this RHEL version ?           ... View more

We have kafka cluster with 3 nodes , each kafka include zookeeper server and schema registry   We get the following error on one of the zookeeper server   [2019-11-12 07:44:20,719] ERROR Unable to load database on disk (org.apache.zookeeper.server.quorum.QuorumPeer) java.io.IOException: Unreasonable length = 198238896 at org.apache.jute.BinaryInputArchive.checkLength(BinaryInputArchive.java:127) at org.apache.jute.BinaryInputArchive.readBuffer(BinaryInputArchive.java:92) at org.apache.zookeeper.server.persistence.Util.readTxnBytes(Util.java:233) at org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:629) at org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:166) at org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:223) at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:601) at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:591) at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:164) at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:111) at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:78)     seems that some snapshot files under folder /opt/confluent/zookeeper/data/version-2 are corrupted     under folder version-2 , we have the following example files     many files as log.3000667b5 many files as snapshot.200014247 one file - acceptedEpoch one file – currentEpoch so the question is – how to start the zookeeper server   from my understanding we have two options , but not sure about them   one option is to move version-2 folder to other place as version-2_backup  and create new folder - version-2 under /opt/confluent/zookeeper/data then start the zookeeper server and hope that snapshot will copied from other good active zookeeper server ?     second option is maybe to move version-2 folder to other place as version-2_backup , create new folder as - version-2 and copy all content from version-2 from good machine to the bad zookeeper server to version-2 , but I not sure if this is right option? ... View more