详解hbase搭建遇到问题及解决方法

java.net.NoRouteToHostException: No route to host

 at java.net.PlainSocketImpl.socketConnect(Native Method)

 at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)

 at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)

 at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)

 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)

 at java.net.Socket.connect(Socket.java:579)

 at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:368)

 at org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:402)

 at org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:840)

 at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:762)

2015-05-19 10:26:26,983 [myid:1] - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@849] - Notification time out: 800

 解决方法

 此问题产生的主要原因是因为zookeeper集群未关闭防火墙。 
 执行下面命令后仍然报上面的错误： 
   systemctl start iptables.service 
 经过仔细查找后发现，CentOS 7.0默认使用的是firewall作为防火墙，需要执行如下命令关闭防火墙: 
 systemctl stop firewalld.service #停止firewall 
 systemctl disable firewalld.service #禁止firewall开机启动 
 关闭各个节点防火墙后，重启zookeeper进程，就可以解决上述问题了。

2.RegionServer进程挂掉

Caused by: java.io.IOException: Couldnt set up IO streams

 at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:786)

 at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)

 at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)

 at org.apache.hadoop.ipc.Client.call(Client.java:1438)

 ... 60 more

Caused by: java.lang.OutOfMemoryError: unable to create new native thread

 at java.lang.Thread.start0(Native Method)

 at java.lang.Thread.start(Thread.java:713)

 at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:779)

 解决方法

 /etc/security/limits.conf

 /etc/security/limits.d/90-nproc.conf

* hard nproc 65536

* soft nproc 65536

* hard nofile 65536

* soft nofile 65536

3.增加thrift server的线程数

2015-06-05 12:46:37,756 INFO [thrift-worker-6] client.AsyncProcess: #79, waiting for 72000 actions to finish

2015-06-05 12:46:37,756 INFO [thrift-worker-9] client.AsyncProcess: #79, waiting for 48908 actions to finish

2015-06-05 12:46:37,855 INFO [thrift-worker-8] client.AsyncProcess: #79, waiting for 72000 actions to finish

2015-06-05 12:46:38,198 INFO [thrift-worker-2] client.AsyncProcess: #1, waiting for 78000 actions to finish

2015-06-05 12:46:38,762 INFO [thrift-worker-13] client.AsyncProcess: #79, waiting for 72000 actions to finish

2015-06-05 12:46:39,547 INFO [thrift-worker-0] client.AsyncProcess: #17, waiting for 78000 actions to finish

2015-06-05 12:47:55,612 INFO [thrift-worker-9] client.AsyncProcess: #79, waiting for 108000 actions to finish

2015-06-05 12:47:55,912 INFO [thrift-worker-6] client.AsyncProcess: #79, waiting for 114000 actions to finish

 解决方法

 增加thriftServer线程数

 hbase-daemon.sh start thrift threadpool -m 200 -w 500

 在hbase_home目录下的logs目录中可以看到启动日志信息如下：

INFO [main] thrift.ThriftServerRunner: starting TBoundedThreadPoolServer on /0.0.0.0:9090; min worker threads=200, max worker threads=500, max queued requests=1000

hbase-daemon.sh start thrift –threadpool 

-m

4. zookeeper使用内存大的问题

 Heap Configuration配置中我们可以看到，配置的heap内存很大，现在我们修改zkServer.sh脚本减小MaxHeapSize，具体步骤如下： 
 * 打开zookeeper安装目录下bin文件夹中的zkServer.sh 
 * 在 zkServer.sh文件的49行处加入 JVMPARAM= -Xms1000M -Xmx1000M -Xmn512M  
 * 然后修改zkServer.sh 109~110行出的内容。

修改前如下：

nohup "$JAVA" "-Dzookeeper.log.dir=${ZOO_LOG_DIR}" "-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}" /

 -cp "$CLASSPATH" $JVMFLAGS $ZOOMAIN "$ZOOCFG" "$_ZOO_DAEMON_OUT" 2 1 /dev/null 

 修改后如下(将在49上添加的JVMPARAM参数项添加在JVMFLAGS后面)：

nohup "$JAVA" "-Dzookeeper.log.dir=${ZOO_LOG_DIR}" "-Dzookeeper.root.logger=${ZOO_LOG4J_PROP}" /

-cp "$CLASSPATH" $JVMFLAGS $JVMPARAM $ZOOMAIN "$ZOOCFG" "$_ZOO_DAEMON_OUT" 2 1 /dev/null 

 打开 zookeeper/bin/zkEnv.sh 文件,在zkEvn.sh中49~52行处有如下内容：

if [ -f "$ZOOCFGDIR/java.env" ]

 . "$ZOOCFGDIR/java.env"

fi

 该文件已经明确说明有独立JVM内存的设置文件，路径是zookeeper/conf/java.env 
 安装的时候这个路径下没有有java.env文件，需要自己新建一个： 
 * vim java.env 
 * java.env文件内容如下：

#!/bin/sh

# heap size MUST be modified according to cluster environment

export JVMFLAGS="-Xms512m -Xmx1024m $JVMFLAGS"

[hadoop@hadoop202 conf]$ jmap -heap 10151

Attaching to process ID 10151, please wait...

Debugger attached successfully.

Server compiler detected.

JVM version is 24.71-b01

using thread-local object allocation.

Parallel GC with 18 thread(s)

Heap Configuration:

 MinHeapFreeRatio = 0

 MaxHeapFreeRatio = 100

 MaxHeapSize = 1073741824 (1024.0MB)

 NewSize = 1310720 (1.25MB)

 MaxNewSize = 17592186044415 MB

 OldSize = 5439488 (5.1875MB)

 NewRatio = 2

 SurvivorRatio = 8

 PermSize = 21757952 (20.75MB)

 MaxPermSize = 85983232 (82.0MB)

 G1HeapRegionSize = 0 (0.0MB)

Heap Usage:

PS Young Generation

Eden Space:

 capacity = 135266304 (129.0MB)

 used = 43287608 (41.28227996826172MB)

 free = 91978696 (87.71772003173828MB)

 32.00176741725715% used

From Space:

 capacity = 22020096 (21.0MB)

 used = 0 (0.0MB)

 free = 22020096 (21.0MB)

 0.0% used

To Space:

 capacity = 22020096 (21.0MB)

 used = 0 (0.0MB)

 free = 22020096 (21.0MB)

 0.0% used

PS Old Generation

 capacity = 358088704 (341.5MB)

 used = 0 (0.0MB)

 free = 358088704 (341.5MB)

 0.0% used

PS Perm Generation

 capacity = 22020096 (21.0MB)

 used = 8887040 (8.475341796875MB)

 free = 13133056 (12.524658203125MB)

 40.358770461309526% used

2699 interned Strings occupying 217008 bytes.

原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/57792.html

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