xiangdong Huang created IOTDB-328:
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Summary: 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
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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