Hbase 管理的zookeeper 突然尝试连接到localhost 而不是zookeeper quorum [英] Hbase managed zookeeper suddenly trying to connect to localhost instead of zookeeper quorum
问题描述
我正在使用表映射器和化简器对大规模问题进行一些测试.在某个点之后，当工作完成 80% 时，我的减速器开始出现故障.从我查看系统日志时可以看出，问题是我的一个动物园管理员正在尝试连接到本地主机，而不是仲裁中的其他动物园管理员
I was running some tests with table mappers and reducers on large scale problems. After a certain point my reducers started failing when the job was 80% done. From what I can tell when looking at the syslogs the problem is that one of my zookeepers is attempting to connect to the localhost as opposed to the other zookeepers in the quorum
奇怪的是，当映射正在进行时，它似乎可以很好地连接到其他节点，这减少了它的问题.以下是系统日志的选定部分，可能与弄清楚发生了什么有关
Oddly it seems to do just fine connecting to the other nodes when mapping is going on, its reducing that it has a problem with. Here are selected portions of the syslog which might be relevant to figuring out whats going on
2014-06-27 09:44:01,599 INFO [main] org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=hdev02:5181,hdev01:5181,hdev03:5181 sessionTimeout=10000 watcher=hconnection-0x4aee260b, quorum=hdev02:5181,hdev01:5181,hdev03:5181, baseZNode=/hbase
2014-06-27 09:44:01,612 INFO [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x4aee260b connecting to ZooKeeper ensemble=hdev02:5181,hdev01:5181,hdev03:5181
2014-06-27 09:44:01,614 INFO [main-SendThread(hdev02:5181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server hdev02/172.17.43.36:5181. Will not attempt to authenticate using SASL (Unable to locate a login configuration)
2014-06-27 09:44:01,615 INFO [main-SendThread(hdev02:5181)] org.apache.zookeeper.ClientCnxn: Socket connection established to hdev02/172.17.43.36:5181, initiating session
2014-06-27 09:44:01,617 INFO [main-SendThread(hdev02:5181)] org.apache.zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x0, likely server has closed socket, closing socket connection and attempting reconnect
2014-06-27 09:44:01,723 WARN [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper, quorum=hdev02:5181,hdev01:5181,hdev03:5181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
2014-06-27 09:44:01,723 INFO [main] org.apache.hadoop.hbase.util.RetryCounter: Sleeping
***
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: finalMerge called with 1 in-memory map-outputs and 1 on-disk map-outputs
2014-06-27 09:55:12,012 INFO [main] org.apache.hadoop.mapred.Merger: Merging 1 sorted segments
2014-06-27 09:55:12,013 INFO [main] org.apache.hadoop.mapred.Merger: Down to the last merge-pass, with 1 segments left of total size: 33206049 bytes
2014-06-27 09:55:12,208 INFO [main] org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Merged 1 segments, 33206079 bytes to disk to satisfy reduce memory limit
2014-06-27 09:55:12,209 INFO [main] org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Merging 2 files, 265119413 bytes from disk
2014-06-27 09:55:12,209 INFO [main] org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Merging 0 segments, 0 bytes from memory into reduce
2014-06-27 09:55:12,210 INFO [main] org.apache.hadoop.mapred.Merger: Merging 2 sorted segments
2014-06-27 09:55:12,212 INFO [main] org.apache.hadoop.mapred.Merger: Down to the last merge-pass, with 2 segments left of total size: 265119345 bytes
2014-06-27 09:55:12,279 INFO [main] org.apache.zookeeper.ZooKeeper: Initiating client connection, connectString=localhost:2181 sessionTimeout=90000 watcher=hconnection-0x65afdbbb, quorum=localhost:2181, baseZNode=/hbase
2014-06-27 09:55:12,281 INFO [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Process identifier=hconnection-0x65afdbbb connecting to ZooKeeper ensemble=localhost:2181
2014-06-27 09:55:12,282 INFO [main-SendThread(localhost.localdomain:2181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server localhost.localdomain/127.0.0.1:2181. Will not attempt to authenticate using SASL (Unable to locate a login configuration)
2014-06-27 09:55:12,283 WARN [main-SendThread(localhost.localdomain:2181)] org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
2014-06-27 09:55:12,384 WARN [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper, quorum=localhost:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
2014-06-27 09:55:12,384 INFO [main] org.apache.hadoop.hbase.util.RetryCounter: Sleeping 1000ms before retry #0...
2014-06-27 09:55:13,385 INFO [main-SendThread(localhost.localdomain:2181)] org.apache.zookeeper.ClientCnxn: Opening socket connection to server localhost.localdomain/127.0.0.1:2181. Will not attempt to authenticate using SASL (Unable to locate a login configuration)
2014-06-27 09:55:13,385 WARN [main-SendThread(localhost.localdomain:2181)] org.apache.zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing
***
org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Possibly transient ZooKeeper, quorum=localhost:2181, exception=org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
2014-06-27 09:55:13,486 ERROR [main] org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 1 attempts
2014-06-27 09:55:13,486 WARN [main] org.apache.hadoop.hbase.zookeeper.ZKUtil: hconnection-0x65afdbbb, quorum=localhost:2181, baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
我很确定它的配置正确，这是我的 hbase-site.xml 的相关部分.
I'm pretty sure its configured correctly, here is the relevant portion of my hbase-site.xml.
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>5181</value>
<description>Property from ZooKeeper's config zoo.cfg.
The port at which the clients will connect.
</description>
</property>
<property>
<name>zookeeper.session.timeout</name>
<value>10000</value>
<description></description>
</property>
<property>
<name>hbase.client.retries.number</name>
<value>10</value>
<description></description>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>hdev01,hdev02,hdev03</value>
<description></description>
</property>
据我所知，hdev03 是唯一有此问题的服务器.对所有相关端口进行 Netstating 并没有显示出任何奇怪的东西.
So far as I can tell hdev03 is the only server that has any problem with this. Netstating all relevant ports doesn't show me anything strange.
推荐答案
我在 Yarn 上通过 Spark 运行 HBase 时遇到了同样的问题.一切都很好，直到突然它开始尝试连接到 localhost 而不是法定人数.在 HBase 调用修复问题之前以编程方式设置端口和仲裁
I've had same problem when running HBase through Spark on Yarn. Everything was fine until suddenly it started to trying to connect to localhost instead of quorum. Setting port and quorum programmatically before HBase call fixed the issue
conf.set("hbase.zookeeper.quorum","my.server")
conf.set("hbase.zookeeper.property.clientPort","5181")
我使用的是 MapR，它有不寻常的"(5181)zookeeper 端口
I'm using MapR, and it has "unusual" (5181) zookeeper port
这篇关于Hbase 管理的zookeeper 突然尝试连接到localhost 而不是zookeeper quorum的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
