Dear Qingxin Feng, The benefit is that time partition can help us isolate data by time. We change it back to 7 days because we find some problems when using 1 day. To conclude it, "too small is bad, how big depends on user needs".
Best, ------------------------------------ Haiming Zhu 冯 庆新 <[email protected]> 于2022年10月10日周一 21:23写道： > Dear Haiming Zhu, > > If only refer to the explanation below mailing list, "No time partition" > seems better. > So why is it 7 days?not 10 days. What experiments and analyses have you > done to support this change. > > Best Regards. > Qingxin Feng > > 发件人: Haiming Zhu<mailto:[email protected]> > 发送时间: 2022年10月10日 20:03 > 收件人: [email protected]<mailto:[email protected]> > 主题: Re: Change default time partition interval from 1 day to 1 week > > Three reasons to do this: > > 1. 1 day is too small to enable time partition, there're too few tsfiles > in one partition, which is bad for compaction. > 2. Avoid wal accumulation caused by too many time partitions. > 3. Avoid too many partition table entries and then trigger confignode > snapshot frequently. > > > > Best, > ------------------------------------ > Haiming Zhu > > > 冯 庆新 <[email protected]> 于2022年10月10日周一 17:46写道： > > > Hi, > > But “enable_partition” is still “false”,right? According to this it > > doesn't affect anyone who using default value in > > ‘iotdb-datanode.properties’ to using standalone version apache-iotdb. > > If someone uses the distributed version, it will affect newly compiled > and > > started instances,because it works by default in > > “iotdb-confignode.properties”. > > What is the expected impact? Degraded write performance? > > > > Best Regards. > > Thanks! > > > > 发件人: Haiming Zhu<mailto:[email protected]> > > 发送时间: 2022年10月10日 15:06 > > 收件人: iotdb<mailto:[email protected]> > > 主题: Change default time partition interval from 1 day to 1 week > > > > Hi, > > > > We want to change default time partition interval from 1 day to 1 week, > > including > > time_partition_interval_for_routing in the confignode and > > time_partition_interval_for_storage in the datanode. > > > > Best, > > ------------------------------------ > > Haiming Zhu > > > > > >
