hbase 运维问题

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> 

转载：http://www.tuicool.com/articles/iQfYF3