我有跟踪Twitter数据,我想为它设计一个模式。我需要执行的查询如下: 得到推文音量的时间间隔,推文与相应的用户信息,推文与相应的主题信息等...基于以下数据,任何人都告诉架构的设计是正确的..(使rowkey为id +时间戳,列族为用户,其他人分为主要栏目。任何建议?
{
"created_at":"Tue Feb 19 11:16:34 +0000 2013",
"id":303825398179979265,
"id_str":"303825398179979265",
"text":"Unleashing Innovation Conference Kicks Off - Wall Street Journal (India) http:\/\/t.co\/3bkXJBz1",
"source":"\u003ca href=\"http:\/\/dlvr.it\" rel=\"nofollow\"\u003edlvr.it\u003c\/a\u003e",
"truncated":false,
"in_reply_to_status_id":null,
"in_reply_to_status_id_str":null,
"in_reply_to_user_id":null,
"in_reply_to_user_id_str":null,
"in_reply_to_screen_name":null,
"user":{
"id":948385189,
"id_str":"948385189",
"name":"Innovation Plaza",
"screen_name":"InnovationPlaza",
"location":"",
"url":"http:\/\/tinyurl.com\/ee4jiralp",
"description":"All the latest breaking news about Innovation",
"protected":false,
"followers_count":136,
"friends_count":1489,
"listed_count":1,
"created_at":"Wed Nov 14 19:49:18 +0000 2012",
"favourites_count":0,
"utc_offset":28800,
"time_zone":"Beijing",
"geo_enabled":false,
"verified":false,
"statuses_count":149,
"lang":"en",
"contributors_enabled":false,
"is_translator":false,
"profile_background_color":"131516",
"profile_background_image_url":"http:\/\/a0.twimg.com\/profile_background_images\/781710342\/17a75bf22d9fdad38eebc1c0cd441527.jpeg",
"profile_background_image_url_https":"https:\/\/si0.twimg.com\/profile_background_images\/781710342\/17a75bf22d9fdad38eebc1c0cd441527.jpeg",
"profile_background_tile":true,
"profile_image_url":"http:\/\/a0.twimg.com\/profile_images\/3205718892\/8126617ac6b7a0e80fe219327c573852_normal.jpeg",
"profile_image_url_https":"https:\/\/si0.twimg.com\/profile_images\/3205718892\/8126617ac6b7a0e80fe219327c573852_normal.jpeg",
"profile_link_color":"009999",
"profile_sidebar_border_color":"FFFFFF",
"profile_sidebar_fill_color":"EFEFEF",
"profile_text_color":"333333",
"profile_use_background_image":true,
"default_profile":false,
"default_profile_image":false,
"following":null,
"follow_request_sent":null,
"notifications":null
},
"geo":null,
"coordinates":null,
"place":null,
"contributors":null,
"retweet_count":0,
"entities":{
"hashtags":[
],
"urls":[
{
"url":"http:\/\/t.co\/3bkXJBz1",
"expanded_url":"http:\/\/dlvr.it\/2yyG5C",
"display_url":"dlvr.it\/2yyG5C",
"indices":[
73,
93
]
}
],
"user_mentions":[
]
},
"favorited":false,
"retweeted":false,
"possibly_sensitive":false
}
答案 0 :(得分:0)
如果您100%确定该ID是唯一的,则可以使用此行作为存储大量数据的行键:
303825398179979265 - > data_CF
您的列族data_CF将在以下行中定义:
"created_at":"Tue Feb 19 11:16:34 +0000 2013" "id_str":"303825398179979265" ... "user_id":948385189 { take note here I'm denormalizing your dictionary } "user_name":"Innovation Plaza"
列表有点棘手。解决方案是放置一些使其独特的东西,前缀为以下类别:
"entities_hashtags_":"\x00" { Here \x00 is a dummy value }
对于URL,如果排序不重要,您可以在其前面加上UUID。它将保证它是独一无二的。
这种方法的优点是,如果你需要更新这个数据中的一个字段,它将以原子方式完成,因为HBase保证了行的原子性。
对于第二个问题,如果您需要即时汇总信息,则必须预先计算并按照您在另一个表中所述的方式存储它。如果您希望通过M / R生成此数据,则可以将时间戳+行ID设置为基于时间。按主题可能是主题+行ID。这允许您编写具有开始停止行的前缀扫描,该行仅包括您感兴趣的时间范围或主题。
玩得开心!