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[Bug] 为什么我的压缩比很低,而且越来越低,现在差不多2.5 #12568
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Hi, this is your first issue in IoTDB project. Thanks for your report. Welcome to join the community! |
只有两个序列? |
不是,只是所有序列都是这两种类型。 应该有10万左右序列 |
有10万左右的序列,所有序列的两个属性都是这两种类型 |
截止到今天有40亿数据量了,压缩比现在只有2.5左右了,每天都在下降。 每天数据的增量在七千万左右 |
有10万左右的序列,所有序列的两个属性都是这两种类型 |
现在磁盘占用是多大? |
可以再提供一下 unsequence 目录下的文件数吗,另外部署的 iotdb 给 datanode 分配的内存大小是? |
数据不敏感的话可以发一个 tsfile 文件,我们可以分析分析 |
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目前看起来建模方式有一些不合理
1 是导致压缩比不高的主要原因。按目前的建模,所有的时间戳都存储了3份。 |
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Version
iotdb 1.2.0
Describe the bug and provide the minimal reproduce step
编码和压缩方式应该是没有问题,数据量大概目前大概在20亿
What did you expect to see?
怎么降低压缩比呢
What did you see instead?
无
Anything else?
No response
Are you willing to submit a PR?
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