Ok … so having had a look, it seems as if this happens in the UDFExecutableManager Class (And the matching other Manager components. The “SystemFileFactory .makeDirIfNecessary” are the ones creating them. Possibly worth investigating if they really need to exist, of if we could change the Managers to check if they exist.
Chris Von: Xiangdong Huang <[email protected]> Datum: Freitag, 14. Juli 2023 um 09:15 An: [email protected] <[email protected]> Betreff: Re: What are all the empty "ext" directories for? > I can imagine what it’s used for … I was more just asking, why it’s creating > these directories locally instead of just looking if they exist. Always feels > a bit odd, if loads of empty directories are in my filesystem. agree with that feeling... this can be indeed an improvement if it does not bring too much complexity. Best, ----------------------------------- Xiangdong Huang Christofer Dutz <[email protected]> 于2023年7月14日周五 14:30写道： > > Hi Xiangdong, > > I can imagine what it’s used for … I was more just asking, why it’s creating > these directories locally instead of just looking if they exist. Always feels > a bit odd, if loads of empty directories are in my filesystem. > > Chris > > Von: Xiangdong Huang <[email protected]> > Datum: Freitag, 14. Juli 2023 um 07:51 > An: [email protected] <[email protected]> > Betreff: Re: What are all the empty "ext" directories for? > "ext" refers to "extension", and its subfolder: > - trigger, similar with trigger in RDBMS. > - udf, user define functions. > - PIPE, a new function for ETL or data subscription. > > All the above need to users claiming their data processing logic using > jar files. > So as Trevor said, you can put your jar files there. > > > Best, > ----------------------------------- > Xiangdong Huang > > [email protected] <[email protected]> 于2023年7月14日周五 08:55写道： > > > > We have written the relevant documentation, you can see > > https://apache-iotdb.feishu.cn/docx/SG1DdQklco67oaxSLbYcghWxnkc. > > > 2023年7月12日 20:45，Christofer Dutz <[email protected]> 写道： > > > > > > Hi, > > > > > > so playing around with IoTDB running in embedded mode, I noticed that it > > > creates a directory “data” which totally makes sense to me, as it > > > contains all the data. > > > However it also creates a whole tree under “ext” which just seems to > > > contain loads of empty directories. > > > What’s the purpose of these and could we prevent them from being created, > > > if they are not needed? > > > > > > ext > > > /pipe > > > /install > > > /tmp > > > /trigger > > > /install > > > /tmp > > > /udf > > > /install > > > /tmp > > > > > > > > > Chris > >
