apache-zookeeper

问题 @RequestMapping(value = "/getTopics",method = RequestMethod.GET) @ResponseBody public Response getAllTopics() { ZkClient zkClient = new ZkClient(ZookeeperProps.zookeeperURL, ZookeeperProps.connectionTimeoutMs, ZookeeperProps.sessionTimeoutMs, ZKStringSerializer$.MODULE$); Seq<String> topics = ZkUtils.getAllTopics(zkClient); scala.collection.Iterator<String> topicIterator = topics.iterator(); String allTopics = ""; while(topicIterator.hasNext()) { allTopics+=topicIterator.next(); allTopics+="

问题 I am using curator framework in java to interact with ZNodes. How do we get node stats like last_modified time and creation time etc. I could do same in python using kazoo framework. from kazoo.client import KazooClient zk_client = KazooClient(hosts='127.0.0.1:2181') zk_client.start() data, stat = zk_client.get("/my/favorite") Ref. Link: kazoo I tried searching similar support via curator and couldn't get result. Kindly help here. Thanks. 回答1: Curator (note I'm the main author of Curator)

问题 I am using zookeeper c client library. When I run my program, it will output ZOO_INFO to console. Part of log messages looks like: 2015-03-26 20:08:22,115:15978(0x7f83a1fbc740):ZOO_INFO@log_env@712: Client environment:zookeeper.version=zookeeper C client 3.4.6 2015-03-26 20:08:22,115:15978(0x7f83a1fbc740):ZOO_INFO@log_env@716: Client environment:host.name=myhost 2015-03-26 20:08:22,115:15978(0x7f83a1fbc740):ZOO_INFO@log_env@723: Client environment:os.name=Linux 2015-03-26 20:08:22,115:15978

问题 I have installed cloudera and hdfs, mapreduce, zookeper, hbase on it. 4 nodes with these services (3 zookeeper). All are installed by cloudera wizard and have no configuration issues in cloudera. On connect from java I have got an error: 9:32:23.020 [main-SendThread()] INFO org.apache.zookeeper.ClientCnxn - Opening socket connection to server /172.20.7.6:2181 09:32:23.020 [main] INFO org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper - Process identifier=hconnection-0x301abf87 connecting

问题 I have created a python script raw_tweets_stream.py to stream twitter data using twitter api. The json data from twitter is pipped to kafka producer using the script below. `python raw_tweets_stream.py | /usr/hdp/current/kafka-broker/bin/kafka-console-producer.sh --broker-list localhost:2181 --topic raw_json_tweets` raw_json_tweets is the kafka topic created for these tweets. The python script raw_tweets_stream.py runs just fine but it throws error while sending it to the kafka producer. I am

问题 From the Zookeeper docs: ctime The time in milliseconds from epoch when this znode was created. mtime The time in milliseconds from epoch when this znode was last modified. I presume that Zookeeper somehow syncs the (internal) real clock of all the nodes in the ZK cluster in order the time stamps to be consistent regardless of the node where the client connects. Is that so? If yes, how does it work? All I found is: Real time ZooKeeper doesn't use real time, or clock time, at all except to put

问题 I am using Kafka Version 0.10.2.0. Is there a way to secure communication between Zookeper Client i.e ZkClient and zookeper server with SSL. I found some way to do through SASL but i want it through SSL. 回答1: Zookeeper 3.5 includes SSL support but it is still in alpha so Kafka doesn't yet support it. The highest supported version is 3.4 which only includes sasl. Ref: https://issues.apache.org/jira/browse/ZOOKEEPER-1000 回答2: This task can still be achieved by a simple workaround mentioned in

问题 We're using Storm with Kafka and ZooKeeper. We had a situation where we had to delete some topics and recreate them with different names. Our Kafka spouts stayed the same, aside from now reading from the new topic names. However now the spouts are using the offsets from the old topic partitions when trying to read from the new topics. So the tail position of my-topic-name partition 0 will be 500 but the offset will be something like 10000. Is there a way to reset the offset position so it

问题 I have a SolrCloud (v5.2) setup with 2 different cores [ users, docs ] working properly. Now I need to be able to dynamically add new cores that are configuration-wise identical to the docs core that already exists. I don't want to duplicate the configuration (I tried an it works OK) as I need to actually share the synonyms.txt and some other files that constantly change. I think that I need "configsets" but I cannot get them to work. I uploaded the "template" conf using this command: sh

问题 We have an old zookeeper 3-cluster quorum, with some permanent routing info stored in znodes/data. Now we are setting up another brand new 3-cluster quorum on a different data center, and we want to migrate the routing info to it. What's the best reliable way to do this? Will simply copy the transaction log do? Or better with snapshot? Or if there are some tools to extract data from old znodes and replay creation onto the new ones? Similar question found, but not answered best way to copy