查询返回结果中小数点后面的值被自动截取了 #3816
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如图： |
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Replies: 7 comments
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show timeseries看看序列的详细信息？ |
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------------------ 原始邮件 ------------------
发件人: "apache/iotdb" ***@***.***>;
发送时间: 2021年7月27日(星期二) 晚上7:43
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主题: Re: [apache/iotdb] 查询返回结果中小数点后面的值被自动截取了 (#3630)
show timeseries看看序列的详细信息？
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这是因为使用了 RLE编码方式对于浮点数是有损编码导致的，如果需要保证精度，对于浮点数可以使用 gorilla 编码。 |
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如何对线上系统做修改？修改完后影响已归档数据吗 |
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改 iotdb-engine.properties 里的这个参数： |
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这个方案可以，多谢！ |
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改 iotdb-engine.properties 里的这个参数：
float_precision=6
反注释重启生效。不影响已归档数据，只影响新写的数据。