Hi,

Thank you very much. Hope we can build a better IoTDB community together .


Thanks
---
Dawei Liu



> 2020年3月20日 下午10:38,Julian Feinauer <[email protected]> 写道:
> 
> Awesome, very well done Dawei!
> 
> J
> 
> Am 20.03.20, 15:06 schrieb "Dawei Liu" <[email protected]>:
> 
>    Hi 大家好,
> 
>    非常非常开心作为第一个分享 IoTDB 社区周报的人。
> 
>    正文内容包含本周新贡献者、工作项、分布式版本进展,希望能够通过周报的方式展示我们正在做的工作,并吸引感兴趣的人参与到其中。
> 
>    最后祝大家度过一个愉快的周末。
> 
>    [一周公告]
>    1.IOTDB 的官网建设正在进行,你可以点击这里进行预览(https://rhh.666love.cn/ 
> <https://rhh.666love.cn/>), 然后在邮件列表中直接回复[1]或者在jira[2]中留下你的想法。
> 
>    [1] [DISUCSS] a new IoTDB website
>    [2] https://issues.apache.org/jira/browse/IOTDB-521 
> <https://issues.apache.org/jira/browse/IOTDB-521>
> 
>    [本周新贡献者] 排名不分先后,热烈欢迎各位
>       1. SailVR
>       2. VenkatDatta
>       3. zzy9424
>       4. zhanglingzhe0820
> 
>    [分布式版本]
>       1. 支持了聚合查询
>       2. 支持了 group by 查询
>       3. 支持了 fill 查询
>       4. 支持了部分元数据查询(时间序列、设备查询)
>       5. raft日志的持久化基本完成
>       6. 日志追赶简单实现完成,待完善边界情况
>       7. 增加新节点加入配置检查
> 
> 
>    [本周工作]
> 
>       [正在进行中的工作]
>       1. #919  使用 TimeColumn 减少数据拷贝
>            2. #917  优化 memtable 减少乱序数据
>            3. #910  添加更多设计文档
>            4. #902 calcite 集成
>            5. #857 多线程聚合查询
>            6. #855 优化 tsfile 索引
>            7. #854 增加 group by fill 查询语句
>            8. #852 增加 merge 设计文档
>            9. #777  rest api 开发
>       
>       [待修复 bug]
>           本周事本周毕,暂未发现更多问题
> 
>       [本周完成的工作]
>               1.  #928      增加更多详细的写入错误码
>               2.  #926      避免空的 memtable 刷盘
>               3.  #925      更新 merge 策略
>               4.  #915      修改 tsfile 写入流程文档 
>               5.  #914      为 V0.9 版本增加 insertInBatch 方法
>               6.  #913      减少timeColumn 和 batchdata 之间的数据拷贝
>               7.  #909      增加更多的启动检查
>               8.  #908 #880 增加简单的数据库连接池
>               9.  #906      增加 grafana 文本类型支持
>               10. #901          提前合并一些分布式代码到 maste 分支减少冲突
>       
>       [已经修复的 bug]
>               1. #927  在恢复时出现死锁
>               2. #924  tsfile 测试中产生的问题
>               3. #922  统计信息测试中的问题
>               4. #921  删除存储组后在恢复时产生错误
>               5. #920  空的 chunkmetadata 在 LAST 查询中会产生错误结果
>               6. #918  重复创建相同 schema 时产生的错误 
>               7. #916  在高速插入时执行 flush 命令产生的错误
>               8. #907  修复 merge 的部分测试用例 
>               9. #905  修复 timegenerator 中错误缓存的问题
> 
> 
> 
> 
>    Thanks
>    ---
>    Dawei Liu
> 
> 
> 
>> 2020年3月20日 下午10:03,Dawei Liu <[email protected]> 写道:
>> 
>> Hi all,
>> 
>> Very, very happy as the first speaker to share with you IoTDB news of the 
>> week.
>> 
>> Share content contains new contributors, work items, distributed progress, 
>> hope to show what we are doing, and attract people who are interested.
>> 
>> Have a good weekend.
>> 
>> [Weekly announcements]
>> 1.The new version of the IOTDB website is under construction, you can 
>> preview it by clicking here(https://rhh.666love.cn/ 
>> <https://rhh.666love.cn/>), 
>> and then reply directly to the mailing list [1] or leave your idea in 
>> jira[2].
>> 
>> [1] [DISUCSS] a new IoTDB website
>> [2] https://issues.apache.org/jira/browse/IOTDB-521 
>> <https://issues.apache.org/jira/browse/IOTDB-521>
>> 
>> [New contributors this week] In no particular order, welcome all of you
>>      1. SailVR
>>      2. VenkatDatta
>>      3. zzy9424
>>      4. zhanglingzhe0820
>> 
>> [Distributed version progress]
>>      1. support group by query
>>      2. support fill query
>>      3. support some metadata query(timeseries, device)
>>      4. Log persistence in raft is basicly implemented
>>      5. Log catch up in raft is simply implemented without boundary check
>>      6. configuration check when node joins
>> 
>> [Progress of this week]
>> 
>>      [Work in progress]
>>      1. #919    switch timeGenerate to use TimeColumn
>>       2. #917   optimize memtable for reduce unseq data
>>       3. #910   add system design eng files
>>       4. #902   calcite integration
>>       5. #857   parallel aggregation query
>>       6. #855   new tsfile
>>       7. #854   group by fill
>>       8. #852   add merge design doc 
>>       9. #777   rest api support
>>      
>>      [Bugs to be fixed]
>>          Cheers, no bugs found so far
>> 
>>      [Finished work]
>>              1.  #928           add write process error code
>>              2.  #926          avoid flushing empty memtable
>>              3.  #925          update merge recover
>>              4.  #915           fix tsfile write flow diagram doc 
>>              5.  #914           add insertInBatch for V0.9
>>              6.  #913           same struce both timeColumn and batchdata
>>              7.  #909          add start-up checks
>>              8.  #908 #880  add a simple connection pool for session api 
>>              9.  #906          add text support for grafana
>>              10. #901              pre-merge distributed some code into 
>> master
>>               
>>      
>>      [Bugs that have been fixed]
>>              1. #927    fix recover deadlock 
>>              2. #924   tsfile test bug
>>              3. #922   static test bug
>>              4. #921   deleting sg and initing from mlog
>>              5. #920   empty chunkmetadata in last query gives wrong answer
>>              6. #918   add duplicated metadata 
>>              7. #916   execute flush command while inserting
>>              8. #907  fix unit test for merge 
>>              9. #905  timegenerator cache bug 
>> 
>> 
>> 
>> Thanks
>> ---
>> Dawei Liu
>> 
>> 
>> 
> 
> 
> 

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