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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/05/27 06:12:54 UTC
[GitHub] [incubator-iotdb] sqfgood opened a new issue #1274: TsFile文件只能读和写吗？能追加和修改吗？
sqfgood opened a new issue #1274:
URL: https://github.com/apache/incubator-iotdb/issues/1274
TsFile文件只能读和写吗？能基于已有的TsFile文件实现追加和修改吗？
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[GitHub] [incubator-iotdb] jixuan1989 commented on issue #1274: TsFile文件只能读和写吗？能追加和修改吗？(Does TsFile only support Read and Write a New One? Can I append data to the file or modify the data in the File?)
Posted by GitBox <gi...@apache.org>.
jixuan1989 commented on issue #1274:
URL: https://github.com/apache/incubator-iotdb/issues/1274#issuecomment-634467374
> Can I append data to the file ?
可以，可以使用`RestorableTsFileIOWriter` 实现追加写；
Yes, you can use `RestorableTsFileIOWriter` to append data to an existed TsFile.
> Can I modify data in a TsFile?
不行， TsFile不能做数据修改，这种情况下要么使用IoTDB，要么自己组织多个TsFile并用后者替代前者的数据。
No, you can not modify data in a TsFile. If you need to modify data, use IoTDB interface, or you can manage several TsFiles and use the latter version to cover the previous versions.
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[GitHub] [incubator-iotdb] qiaojialin commented on issue #1274: TsFile文件只能读和写吗？能追加和修改吗？(Does TsFile only support Read and Write a New One? Can I append data to the file or modify the data in the File?)
Posted by GitBox <gi...@apache.org>.
qiaojialin commented on issue #1274:
URL: https://github.com/apache/incubator-iotdb/issues/1274#issuecomment-634472406
You can try this:
ForceAppendTsFileWriter tsFileIOWriter = new ForceAppendTsFileWriter(f);
TsFileWriter tsFileWriter = new TsFileWriter(tsFileIOWriter);
No need to register schema again, then you can append data into it and close. (only append data in time ascending order)
TsFile does not support modify.
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[GitHub] [incubator-iotdb] qiaojialin removed a comment on issue #1274: TsFile文件只能读和写吗？能追加和修改吗？(Does TsFile only support Read and Write a New One? Can I append data to the file or modify the data in the File?)
Posted by GitBox <gi...@apache.org>.
qiaojialin removed a comment on issue #1274:
URL: https://github.com/apache/incubator-iotdb/issues/1274#issuecomment-634472406
You can try this:
ForceAppendTsFileWriter tsFileIOWriter = new ForceAppendTsFileWriter(f);
TsFileWriter tsFileWriter = new TsFileWriter(tsFileIOWriter);
No need to register schema again, then you can append data into it and close. (only append data in time ascending order)
TsFile does not support modify.
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[GitHub] [incubator-iotdb] jixuan1989 commented on issue #1274: TsFile文件只能读和写吗？能追加和修改吗？(Does TsFile only support Read and Write a New One? Can I append data to the file or modify the data in the File?)
Posted by GitBox <gi...@apache.org>.
jixuan1989 commented on issue #1274:
URL: https://github.com/apache/incubator-iotdb/issues/1274#issuecomment-634477451
`ForceAppendTsFileWriter` also works if your TsFile is complete.
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