Comments (15)
Hi, this is your first issue in IoTDB project. Thanks for your report. Welcome to join the community!
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只有两个序列?
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不是,只是所有序列都是这两种类型。 应该有10万左右序列
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有10万左右的序列,所有序列的两个属性都是这两种类型
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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
from iotdb.
只有两个序列?
有10万左右的序列,所有序列的两个属性都是这两种类型
from iotdb.
现在磁盘占用是多大?
顺便数一下文件个数?
(之前的截图看不到,似乎上传失败了)
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from iotdb.
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?
from iotdb.
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?
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看了下sequence的文件数比上次少了
今天物理磁盘占用91g,总数据量到75亿了。压缩比还在下降 大概2.41了,降的比之前慢了。
from iotdb.
数据不敏感的话可以发一个 tsfile 文件,我们可以分析分析
from iotdb.
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
- 现在的建模里,假如
root.JH.JHGDS.DV_SYSOPSD81
作为一个device,一个 device下有 ts 和 v 两个measurements。建模可以优化为root.JH.JHGDS
作为一个 device,DV_SYSOPSD81
作为其中的一个 measurement,ts 和 v 分别作为时间戳和值,不需要写成两个序列。序列root.JH.JHGDS.DV_SYSOPSD81
可以作为一个 double 类型的序列。 - database 的个数有些过多了,推荐 1 个。
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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Related Issues (20)
- [Bug] The built-in function MAX_BY cannot be used 无法使用内置函数MAX_BY HOT 2
- [Bug] An error occurred when executing getDeviceToStorageGroup():root is not a legal path HOT 3
- [Bug] DateTimeUtilsTest.getConvertDurationIncludingMonthUnit() tests are timezone dependent HOT 1
- [Bug] 授权失效 HOT 1
- [Improvement] Allow Unit Tests to be run in parallel
- Remove use of `maven.multiModuleProjectDirectory` property
- org.apache.commons.io.FileSystem.isLegalFileName(CharSequence candidate) method is unreasonable HOT 1
- For help:when compile IoTdb src code HOT 3
- tsfile 是否可以根据时间进行分割?
- 不存在时间序列的情况下,直接插入数据,为什么插入的整数类型会默认加上小数点 HOT 4
- 标签是否可以使用select语句,在where条件中进行查询? HOT 1
- iotdb里面的time无法取别名 HOT 1
- [Bug] 麒麟系统 docker 部署iotdb,启动后卡在 Checking whether the ports are already occupied... HOT 4
- [Bug] When having more than one pipeline subscription and restarting the server, the second subscription ends in a loop of doom
- mqtt开启 HOT 4
- Refactor the Server Command-Lines for Config-Node, Data-Node and the upcoming AI-Node HOT 1
- DISTINCT has not been registered HOT 1
- Previous exception in task: org.apache.thrift.transport.TSocket.<init>(Lorg/apache/thrift/TConfiguration;Ljava/lang/String;II)V HOT 2
- 使用spark2.4.0-cdh6.3.2版本去将数据查出来再写入2.1.1-cdh6.3.2,jar包冲突,可有好的解决方法 HOT 3
- C#集群的连接问题 HOT 4
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