HBase0.9x问题总结


1.最近hbase的rgion经常挂掉一个，查看该节点日志发现如下错误：

2014-02-22 01:52:02,194 ERROR org.apache.Hadoop.hbase.regionserver.HRegionServer: Close and delete failed

org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on /hbase/.logs/testhd3,60020,1392948100268/testhd3%2C60020%2C1392948100268.1393004989411 File does not exist. Holder DFSClient_hb_rs_testhd3,60020,1392948100268 does not have any open files.

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1631)

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1622)

查了很长时间也没找到hbase的问题，后来根据网上资料查看了hadoop的日志如下：

2014-02-22 01:52:00,935 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hadoop cause:org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on /hbase/.logs/testhd3,60020,1392948100268/testhd3%2C60020%2C1392948100268.1393004989411 File does not exist. Holder DFSClient_hb_rs_testhd3,60020,1392948100268 does not have any open files.

2014-02-22 01:52:00,936 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 9000, call addBlock(/hbase/.logs/testhd3,60020,1392948100268/testhd3%2C60020%2C1392948100268.1393004989411, DFSClient_hb_rs_testhd3,60020,1392948100268, null) from 172.72.101.213:59979: error: org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on /hbase/.logs/testhd3,60020,1392948100268/testhd3%2C60020%2C1392948100268.1393004989411 File does not exist. Holder DFSClient_hb_rs_testhd3,60020,1392948100268 does not have any open files.

org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException: No lease on /hbase/.logs/testhd3,60020,1392948100268/testhd3%2C60020%2C1392948100268.1393004989411 File does not exist. Holder DFSClient_hb_rs_testhd3,60020,1392948100268 does not have any open files.

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1631)

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:1622)

结果发现两个日志有几乎相同的记录，可以确认hbase的问题是由hadoop引起，修改如下：

解决办法，调整xcievers参数

默认是4096，改为8192

vi /home/dwhftp/opt/hadoop/conf/hdfs-site.xml

<property>

<name>dfs.datanode.max.xcievers</name>

<value>8192</value>

</property>

dfs.datanode.max.xcievers 参数说明

一个 Hadoop HDFS Datanode 有一个同时处理文件的上限. 这个参数叫 xcievers (Hadoop的作者把这个单词拼错了). 在你加载之前，先确认下你有没有配置这个文件conf/hdfs-site.xml里面的xceivers参数，至少要有4096:

<property>

<name>dfs.datanode.max.xcievers</name>

<value>4096</value>

</property>

HBase 的详细介绍：请点这里
HBase 的下载地址：请点这里

Hadoop+HBase搭建云存储总结 PDF

HBase 结点之间时间不一致造成regionserver启动失败

Hadoop+ZooKeeper+HBase集群配置

Hadoop集群安装&HBase实验环境搭建

基于Hadoop集群的HBase集群的配置 ‘

Hadoop安装部署笔记之-HBase完全分布模式安装

单机版搭建HBase环境图文教程详解

相关内容