Hi,
If someone uses NativeRestorableIOWriter, please notice this PR [1].
The behavior of the class changes a little:
1. if append == false, the writer will be closed after it is created.
a. if the tsfile is broken, the behavior of the class is fixing the
broken tsfile and make it sealed.
b
Hi,
This PR has opened for several days. I will merge this PR into the master.
By the way, I notice that there is no document about TsFile API. Actually
we have previous versions about the API introduction and example on
https://github.com/thulab/tsfile/wiki , but I am not sure whether they
catch
t;
>> Thanks
>> XuYi
>>
>> iPhoneから送信
>>
>> 2019/03/08 1:41、Julian Feinauer のメール:
>>
>> > Hi,
>> >
>> > Yes this is what I meant.
>> >
>> > Julian
>> >
>> > Von mei
What do you think of this @xiangdong
>
> Thanks
> XuYi
>
> iPhoneから送信
>
> 2019/03/08 1:41、Julian Feinauer のメール:
>
> > Hi,
> >
> > Yes this is what I meant.
> >
> > Julian
> >
> > Von mei
Julian Feinauer のメール:
> Hi,
>
> Yes this is what I meant.
>
> Julian
>
> Von meinem Mobiltelefon gesendet
>
>
> Ursprüngliche Nachricht --------
> Betreff: Re: Operation and robustness of iotDB
> Von: 徐毅
t I meant.
>
> Julian
>
> Von meinem Mobiltelefon gesendet
>
>
> Ursprüngliche Nachricht --------
> Betreff: Re: Operation and robustness of iotDB
> Von: 徐毅
> An: dev@iotdb.apache.org
> Cc:
>
> Hi,
> In the definition of ChunkGroup, what is
Hi,
Yes this is what I meant.
Julian
Von meinem Mobiltelefon gesendet
Ursprüngliche Nachricht
Betreff: Re: Operation and robustness of iotDB
Von: 徐毅
An: dev@iotdb.apache.org
Cc:
Hi,
In the definition of ChunkGroup, what is the meaning of 'share one time
signal'
Hi,
In the definition of ChunkGroup, what is the meaning of 'share one time
signal'? Do these measurements share same timestamps?
Thanks
XuYi
On 3/8/2019 01:11，Julian Feinauer wrote：
Hey Xiangdong,
hey all,
I like the documentation much.
The only thing I'm a bit unsure is about the names (as th
Hey Xiangdong,
hey all,
I like the documentation much.
The only thing I'm a bit unsure is about the names (as there is no
clarification).
So, before I update it with any wrong information I would like to ensure that I
have the correct understanding.
I assume that most naming is similar to Parqu
est code and
> give you feedback!
>
> Thank you!
> Julian
>
> Von meinem Mobiltelefon gesendet
>
>
> ---- Ursprüngliche Nachricht ----
> Betreff: Re: Operation and robustness of iotDB
> Von: Xiangdong Huang
> An: dev@iotdb.apache.org
> Cc:
>
> Hi,
>
&
endet
Ursprüngliche Nachricht
Betreff: Re: Operation and robustness of iotDB
Von: Xiangdong Huang
An: dev@iotdb.apache.org
Cc:
Hi,
I have added a new TsFileIOWriter, which supports to recover data from a
broken TsFile (I mean, a TsFile that is not closed correctly). The PR is
Hi,
I have added a new TsFileIOWriter, which supports to recover data from a
broken TsFile (I mean, a TsFile that is not closed correctly). The PR is
https://github.com/apache/incubator-iotdb/pull/87.
You can use the new feature by:
```
NativeRestorableIOWriter rWriter = new NativeRestorableI
Hey,
thank you fort he link... I did not know of this.. this is exactly what I was
looking for!
Julian
PS.: Looking forward to your PR : )
Am 05.03.19, 12:26 schrieb "Xiangdong Huang" :
Hi,
1. We have a document to introduce that:
https://cwiki.apache.org/confluence/display/
Hi,
1. We have a document to introduce that:
https://cwiki.apache.org/confluence/display/IOTDB/TsFile+Format
2. The new API for recovering data is almost done. I am writing the UTs
now. Maybe I can submit a PR tonight (if everything is fine...)
Best,
---
Xiangdong
Hi Xiangdong,
that sounds excellent.
Do you have a short overview of how the file format is designed on disk?
I know that its somewhat similar to parquet but I did not find more details.
Basically what would suffice for us would be something like skipping an invalid
column group (or how you name
Hi,
If so, I think I need to add a new API to allow you continue to write data
in an existing but not closed correctly TsFile. Then everything is fine
for you :D
Best,
---
Xiangdong Huang
School of Software, Tsinghua University
黄向东
清华大学 软件学院
Julian Feinauer 于
Hey Xiangdong,
thanks for the great explanation.
And in fact, I agree with you that it would be best if we start to play around
with it and reply all our findings or wishes back to this list (in fact that
proved to be beneficial in plc4x as well).
You confirm my thoughts about the two "levels"
Hi,
TsFile API is not deprecated. In fact, it is designed for this scenario and
MapReduce/Spark computing.
If you just use Reader and Writer API, there is something you need to know:
Let's suppose your block size is x Bytes, (tsfile-format.properties:
group_size_in_byte).
1. If you write data a
Hi Xiangdong,
thanks for the info.
How is it in the case when you use the Reader / Writer API for the tsfiles
directly (or should this be considered "deprecated")?
Can these files come to corrupted state?
One Situation where we have to deal with these situations is "at the edge" when
we have de
Hi,
IoTDB can support either on a server with 7*24 or a RaspberryPi. We have
tested both the two scenario.
When you shutdown an IoTDB instance in force (e.g., power off) and restart
it again, no data loses ( if you enable the WAL).
However, currently we do not optimize the time cost of the resta
Hello development-team
First of all thanks for developing this kind of interesting project and
bringing it into apache incubator.
I have a question regarding the place of operation and robustness:
* Is iotDB concepted as application on a server which is running 24/7 or
* Is it also poss
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