NebulaGraph 讨论群 • Jupiter-2022-W52 #165
Replies: 74 comments
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graph有自动重启机制吗，经常查询语句报错，graph服务就down了 |
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自己写个服务监听 |
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「韦~迎： 哈哈，动不动就down，真的头大 |
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， 碰到个这么个问题， 哪位碰到过么 |
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换一份就没问题了， 那个ldbc 就有问题 |
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你试试从某个点出发，应该不会报错的 |
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emm，应该是和数据量有关系，ldbc 的话，应该数据量比篮球集大很多 |
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那肯定没问题 |
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就是这个报错的意思就是 因为数据量太大了， 内存溢出了？ |
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因为。你那个语句就是扫全表来捞数据，所以容易出问题。 |
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这个 limit 没推到存储 |
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所以代价比较大 |
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因为扫边 目前内核也是从 scanvertex 开始的 |
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这种情况没推到 storage |
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那这样估计我们生活很容易爆内存 |
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「想念小鱼干的清蒸： 蒙得那么好。要不要来考个 NebulaGraph 技能认证，说不定就蒙过了 https://academic.nebula-graph.io/certifications」 考了一个低配版的 |
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说明还不够熟练 |
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「古思为：vesoft-inc/nebula#5019 还没有边索引的」 回头看下 我之前看过边索引也是从点开始扫描的 |
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所以没想清楚边的该怎么下推 |
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我们之前做了一版点的下推 一直没机会合到社区 |
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就是我一直立的 flag 后面再找别的机会 |
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[旺柴] |
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不懂就问，nebula支持存三元组嘛 |
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rdf？ |
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嗯呐，好像是不行的吧 |
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一起来康康 [让我看看] |
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「阿咚： 不支持 记得文档前面写了 |
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！ |
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「阿咚：不懂就问，nebula支持存三元组嘛」 目前看到的，一般学术界会用RDF，产业界都是支持属性图 |
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「方扬：目前看到的，一般学术界会用RDF，产业界都是支持属性图」 是的啊 |
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Archive of WeChat Group: NebulaGraph 讨论群 • Jupiter-2022-W52
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