apache-zookeeper

error while starting kafka broker

由 泪湿孤枕 提交于 2019-12-10 02:42:00
问题 I was able to successfully set up zookeeper and one kafka broker yesterday. Everything worked as expected. I shut down kafka (ctrl + c) and then zookeeper. Today I started zookeeper and when I started kafka ( bin/kafka-server-start.sh config/server0.properties ), I get the following error. I tried various remedies suggested (removing completely my kafka installation and doing it again from scratch). Still I get same error. [2016-09-28 16:15:55,895] FATAL Fatal error during

Why can't my Zookeeper server rejoin the Quorum?

由 时间秒杀一切 提交于 2019-12-09 14:27:24
问题 I have three servers in my quorum. They are running ZooKeeper 3.4.5. Two of them appear to be running fine based on the output from mntr . One of them was restarted a couple days ago due to a deploy, and since then has not been able to join the quorum. Some lines in the logs that stick out are: 2014-03-03 18:44:40,995 [myid:1] - INFO [main:QuorumPeer@429] - currentEpoch not found! Creating with a reasonable default of 0. This should only happen when you are upgrading your installation and:

Not able to connect to kafka server on google compute engine from local machine

由 会有一股神秘感。 提交于 2019-12-09 12:58:14
问题 I am running my zookeeper and kafka server on google compute engine. Both are running on default ports(zookeeper on 2181 an kafka on 9092). Both are running on the same instance. I have opened up both the ports as well. In my server.properties I have configured zookeeper.connect=<InternalIP>:2181 host.name=localhost If I try to push/consume message form the same server, I am able to do so To push/consume I use bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test bin/kafka

What's the difference between zookeeper vs spring cloud config server?

由 柔情痞子 提交于 2019-12-09 08:58:58
问题 What's the difference between zookeeper vs spring cloud config server? They both store configurations in server and make them available to clients. When should one be used over the other? 回答1: What's the difference between zookeeper vs spring cloud config server? With the Spring Cloud Config Server you have a central place to manage external properties for applications across all environments. The concepts on config server map identically to the Spring Environment and PropertySource

Embed Apache ZooKeeper in Jetty generates Debug log message

由 陌路散爱 提交于 2019-12-09 06:55:24
I am using Jetty 8 and ZooKeeper 3.4.5. When I connect to ZooKeeper, jetty keep generating DEBUG level message. How to suppress it? 16:54:56.757 [main-SendThread(127.0.0.1:2181)] DEBUG o.a.z.client.ZooKeeperSaslClient - Could not retrieve login configuration: java.lang.SecurityException: Unable to locate a login configuration 16:54:56.758 [main-SendThread(127.0.0.1:2181)] DEBUG o.a.z.client.ZooKeeperSaslClient - Could not retrieve login configuration: java.lang.SecurityException: Unable to locate a login configuration 16:54:56.758 [main-SendThread(127.0.0.1:2181)] DEBUG o.a.z.client

Hbase error zookeeper exists failed after 3 retiries

由 落花浮王杯 提交于 2019-12-09 02:51:28
问题 I am using HBASE 0.94.8 standalone mode in Ubuntu. Its working fine i am able to do every operations in Hbase-shell. But after i logged of my system its giving following error 15/07/28 15:10:30 ERROR zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 3 retries 15/07/28 15:10:30 WARN zookeeper.ZKUtil: hconnection-0x14ed40513350009 Unable to set watcher on znode (/hbase) org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase at org

What's the purpose of using Zookeeper rather than just databases for managing distributed systems?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-08 15:18:57
问题 I’m learning Zookeeper and so far I don't understand the purpose of using it for distributed systems that databases can't solve. The use cases I’ve read are implementing a lock, barrier, etc for distributed systems by having Zookeeper clients read/write to Zookeeper servers. Can’t the same be achieved by read/write to databases ? For example my book describes the way to implement a lock with Zookeeper is to have Zookeeper clients who want to acquire the lock create an ephemeral znode with a

KeeperErrorCode = NoNode for /admin/preferred_replica_election

由 狂风中的少年 提交于 2019-12-08 15:09:21
问题 when i starting kafka,zookeeper happens error. INFO Got user-level KeeperException when processing sessionid:0x156028651c00001 type:delete cxid:0x1b zxid:0x59 txntype:-1 reqpath:n/a Error Path:/admin/preferred_replica_election Error:KeeperErrorCode = NoNode for /admin/preferred_replica_election (org.apache.zookeeper.server.PrepRequestProcessor) 回答1: Please be informed that this is not an error it is just a log warning on zookeeper .Howeaver the kafka-producer will not be able to produce

Java client fails to connect to Zookeeper and HBase

由 扶醉桌前 提交于 2019-12-08 13:35:20
问题 I wrote a simple HBase client program to perform CRUD operations in my HBase cluster (1 Master and 3 Region Server). The Zookeeper instance is only running in the master server and the quorum includes all the 4 servers. The cluster is running fine and can perform read/write using YCSB client (means there are nothing wrong in the server/zookeeper side). Now in the eclipse classpath I have added all the HBase libs and hbase-0.94.7.jar (which contains the hbase-default.xml file). I have also

Error with zookeeper & storm

由 一个人想着一个人 提交于 2019-12-08 09:08:47
问题 I am developing a code for Storm, which is an example of the developers. My problem is that when you run this code from IDE Eclipse, do not get the connection between Storm and Zookeeper is established. Zookeeper is running in 2181 and is also set in storm.yaml. My exception is: 72992 [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2000] WARN o.a.s.s.o.a.z.s.NIOServerCnxn - caught end of stream exception org.apache.storm.shade.org.apache.zookeeper.server.ServerCnxn$EndOfStreamException: Unable to read
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