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https://issues.apache.org/jira/browse/IOTDB-328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jialin Qiao closed IOTDB-328.
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Fix Version/s: 0.10.0-SNAPSHOT
Resolution: Fixed
> Check the validity of settings in configuration files when restart and upgrade
> ------------------------------------------------------------------------------
>
> Key: IOTDB-328
> URL: https://issues.apache.org/jira/browse/IOTDB-328
> Project: Apache IoTDB
> Issue Type: Bug
> Affects Versions: 0.8.0, 0.9.0, 0.8.1
> Reporter: xiangdong Huang
> Priority: Major
> Labels: easyfix
> Fix For: 0.10.0-SNAPSHOT
>
>
> Hi,
> Considering a scenario:
> A user used v0.8.0 first, and changed some parameters (e.g., the default
> encoding method of the time column), and wrote data.
>
> Then, suppose the user upgrades iotdb to 0.9. As there are some new features
> are introduced in 0.9 and the configuration file may be updated, the user may
> replace his iotdb-engine.properties file by using the latest template.
> However, at this time, the user may forget to change the default encoding
> method of the time column in the new configure file, which will bring errors.
>
> So, two new functions are needed:
> (1) saving parameters that can not be changed after an intializaion from the
> configuration file to system/ folder;
> (2) When startup, verify the parameters..
>
> To do that, we need to discuss about that which parameters are needed to be
> recorded.
>
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