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

Changes between Version 18 and Version 19 of HyperTable


Ignore:
Timestamp:
Apr 17, 2008, 10:20:33 AM (18 years ago)
Author:
sunny
Comment:

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  • HyperTable

    v18 v19  
    4949  * The AOL query logs were inserted into an 8-node Hypertable cluster. The average size of each row key was ~7 bytes and each value was ~15 bytes. The insert rate (with 4 simultaneous insert processes) was approximately 410K inserts/s. The table was scanned at a rate of approximately 671K cells/s.
    5050== 【How we use it】 ==
    51  * 以陽明的病人屬性分類資料為範本來建立搜尋引擎
    52   * 參考資料:
    53    * [http://trac.nchc.org.tw/grid/wiki/BioInfo_Project/2008-03-19 待解問題1]
    54    * [http://trac.nchc.org.tw/grid/wiki/BioInfo_Project/2008-04-10 轉檔程式]
    55   * 匯入方式:[[BR]]
    56     將陽明的病人屬性分類資料(XML格式),轉換成Hypertable可批次讀取的TSV格式,再使用HQL指令載入到Hypertable當中
    57   * 匯出方式:[[BR]]
    58     使用HQL指令匯出TSV檔案
    59   * 搜尋方式:[[BR]]
    60     目前Hypertable只提供以Rowkey完全比對及Rowkey或Timestamp的區間比對,以陽明的範例為例:[[BR]]
    61     Source是指檢查之前診斷判定的病因;[[BR]]
    62     Primary Site是指檢查之後診斷判定的病因;[[BR]]
    63     如果用Source為Rowkey來搜尋"Breast",搜尋結果會查出所有Source為"Breast"的資料[[BR]]
    64     如果用Primary Site為Rowkey來搜尋"Breast",搜尋結果會查出所有Primary Site為"Breast"的資料[[BR]]
    65    * NOTE: 交互比對的部份,Hypertable目前似乎沒提供,這個有可能要另外的程式再來處理過
     51 * [http://trac.nchc.org.tw/cloud/wiki/HyperTable/BioInfo_Project 以陽明的病人屬性分類資料為範本來建立搜尋引擎]
    6652== 【Similar Project】 ==
    6753 * [http://hadoop.apache.org/hbase/ HBase]: Bigtable-like structured storage for Hadoop HDFS