Apache kafka 使用高CPU的Zookeeper

我是zookeeper的新手，我在一个有2个内核和16 GB RAM的系统上设置了一个单节点zookeeper。zookeeper上的活动连接数接近700个，占用2GB的RAM和100%的CPU（在两个核心上）。我无法找出导致CPU利用率如此高的原因

我的Zookeeper配置是：

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# the directory where the snapshot is stored.
dataDir=/path
# the port at which the clients will connect
clientPort=2181
# disable the per-ip limit on the number of connections since this is a non-production config
maxClientCnxns=0

而zookeeper日志是：

[2016-12-30 08:14:47,057] INFO Client attempting to establish new session at /10.179.63.152:43480 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:14:47,107] INFO Established session 0x1594ae64cde0188 with negotiated timeout 10000 for client /xx.xxx.xx.xxx:43480 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:14:48,099] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0188 type:create cxid:0x2 zxid:0xa798c81b txntype:-1 reqpath:n/a Error Path:/consumers Error:KeeperErrorCode = NodeExists for /consumers (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:14:48,100] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0188 type:create cxid:0x3 zxid:0xa798c81c txntype:-1 reqpath:n/a Error Path:/consumers/prod Error:KeeperErrorCode = NodeExists for /consumers/prod (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:14:48,101] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0188 type:create cxid:0x4 zxid:0xa798c81d txntype:-1 reqpath:n/a Error Path:/consumers/prod/ids Error:KeeperErrorCode = NodeExists for /consumers/prod/ids (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:25,273] INFO Accepted socket connection from /10.185.3.226:58898 (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2016-12-30 08:15:25,284] INFO Client attempting to establish new session at /xx.xxx.xx.xxx:58898 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:15:25,347] INFO Established session 0x1594ae64cde0189 with negotiated timeout 10000 for client /xx.xxx.xx.xxx:58898 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:15:26,762] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0189 type:create cxid:0x2 zxid:0xa798cb43 txntype:-1 reqpath:n/a Error Path:/consumers Error:KeeperErrorCode = NodeExists for /consumers (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:26,762] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0189 type:create cxid:0x3 zxid:0xa798cb44 txntype:-1 reqpath:n/a Error Path:/consumers/prod Error:KeeperErrorCode = NodeExists for /consumers/prod (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:26,763] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde0189 type:create cxid:0x4 zxid:0xa798cb45 txntype:-1 reqpath:n/a Error Path:/consumers/prod/ids Error:KeeperErrorCode = NodeExists for /consumers/prod/ids (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:56,786] INFO Accepted socket connection from /xx.xxx.xx.xxx:43574 (org.apache.zookeeper.server.NIOServerCnxnFactory)
[2016-12-30 08:15:56,790] INFO Client attempting to establish new session at /xx.xxx.xx.xxx:43574 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:15:56,843] INFO Established session 0x1594ae64cde018a with negotiated timeout 10000 for client /10.185.178.18:43574 (org.apache.zookeeper.server.ZooKeeperServer)
[2016-12-30 08:15:57,743] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde018a type:create cxid:0x2 zxid:0xa798db9d txntype:-1 reqpath:n/a Error Path:/consumers Error:KeeperErrorCode = NodeExists for /consumers (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:57,743] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde018a type:create cxid:0x3 zxid:0xa798db9e txntype:-1 reqpath:n/a Error Path:/consumers/prod Error:KeeperErrorCode = NodeExists for /consumers/prod (org.apache.zookeeper.server.PrepRequestProcessor)
[2016-12-30 08:15:57,744] INFO Got user-level KeeperException when processing sessionid:0x1594ae64cde018a type:create cxid:0x4 zxid:0xa798db9f txntype:-1 reqpath:n/a Error Path:/consumers/prod/ids Error:KeeperErrorCode = NodeExists for /consumers/prod/ids (org.apache.zookeeper.server.PrepRequestProcessor)

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有人能帮我找出问题所在吗。

我认为这不是异常情况，因为独立服务器必须保持700个连接处于打开状态，并且（取决于您的应用程序）要为数百个客户端提供服务（在这些连接中，在给定的时间内，将有数百个客户端与服务器进行积极通信）。如果我弄错了，请纠正我。@ImeshaSudasingha-CPU在700连接时波动太大，CPU显示9%，一旦连接达到800，它就会达到100%。那么正确的处理方法是什么呢？我认为最好将这个问题放在

zookeeper用户邮件列表中(user@zookeeper.apache.org)

我认为这不是异常情况，因为独立服务器必须保持700个连接处于打开状态，并且（取决于您的应用程序）为数百个客户端提供服务（在这些连接中，在给定的一秒钟内将有数百个客户端与服务器进行积极通信）。如果我弄错了，请纠正我。@ImeshaSudasingha-CPU在700连接时波动太大，CPU显示9%，一旦连接达到800，它就会达到100%。那么正确的处理方法是什么呢？我认为最好将这个问题放在

zookeeper用户邮件列表中(user@zookeeper.apache.org)