hadoop hdfs 命令行 設置文件夾大小的上限 quota：配額

》bin/hdfs dfs -put readme.txt /finance

》bin/hdfs dfs -du -s /finance
》3901  /finance

》bin/hdfs dfsadmin -setSpaceQuota 4000 /finance
  設置/finance的大小上限為4000個字節

》bin/hdfs dfs -put readme1.txt /finance
  由於已經超出4000個字節，則會報錯

14/03/04 11:56:31 WARN hdfs.DFSClient: DataStreamer Exception
org.apache.hadoop.hdfs.protocol.DSQuotaExceededException: The DiskSpace quota of /finance is exceeded: quota = 4000【配額】 B = 3.91 KB but diskspace consumed = 268443258【消耗】 B = 256.01 MB
        at org.apache.hadoop.hdfs.server.namenode.INodeDirectoryWithQuota.verifyQuota(INodeDirectoryWithQuota.java:191)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.verifyQuota(FSDirectory.java:2054)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.updateCount(FSDirectory.java:1789)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.updateCount(FSDirectory.java:1764)
        at org.apache.hadoop.hdfs.server.namenode.FSDirectory.addBlock(FSDirectory.java:357)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.saveAllocatedBlock(FSNamesystem.java:2847)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2508)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:555)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:387)

》bin/hdfs dfsadmin -clrSpaceQuota /finance      將配額清除掉
》bin/hdfs dfs -put readme1.txt /finance     這次上傳就不會錯了~

[apache-nutch-1.2.rar 大約248M]
bin/hdfs fsck /finance/apache-nutch-1.2.rar

bin/hdfs fsck /finance/apache-nutch-1.2.rar -files -blocks -locations    將列出block在哪個位置

bin/hdfs dfs -stat "%o %r" /finance/apache-nutch-1.2.rar                  查看某個文件有幾個副本，及每個block的大小~~~