close Warning: Can't synchronize with repository "(default)" (Unsupported version control system "svn": /usr/lib/python2.7/dist-packages/libsvn/_core.so: failed to map segment from shared object: Cannot allocate memory). Look in the Trac log for more information.

Changes between Version 9 and Version 10 of waue/2009/0401


Ignore:
Timestamp:
Apr 1, 2009, 3:55:25 PM (17 years ago)
Author:
waue
Comment:

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  • waue/2009/0401

    v9 v10  
    6161
    6262= Secondary NameNode =
    63 Secondary NameNode定期合併fsimage和edits日誌，將edits日誌文件大小控制在一個限度下。因為內存需求和NameNode在一個數量級上，所以通常secondary NameNode和NameNode運行在不同的機器上。
     63 * Secondary NameNode定期合併fsimage和edits日誌，將edits日誌文件大小控制在一個限度下。因為內存需求和NameNode在一個數量級上，所以通常secondary NameNode和NameNode運行在不同的機器上。
    6464
    65 Secondary NameNode通過bin/start-dfs.sh在conf/masters中指定的節點上啟動
     65 * Secondary NameNode通過bin/start-dfs.sh在conf/masters中指定的節點上啟動
    6666
    6767??  conf/masters的作用 ？？