THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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step3: if there is error after retry, will throw exception which does not execute delete WAL etc.. and set onlyread mode to true
step4:trigger only read mode recovery, will close all tsfile. as the same, default retry 3 times, interval 10 minmin(The configuration file can be modified), there is long time...
step5: if close all tsfile success, will set only-read to false.