Hi, I prefer to disable the data partition by default in 0.10.0, and do not allowed to enabled. So there is only one partition 0 in 0.10.0.
The partition feature has no advantages for a single node IoTDB. We could open this feature after refine the memory control or even with the release of distributed version. Thanks, -- Jialin Qiao School of Software, Tsinghua University 乔嘉林 清华大学 软件学院 > -----原始邮件----- > 发件人: "孙泽嵩" <[email protected]> > 发送时间: 2020-05-26 09:44:05 (星期二) > 收件人: [email protected] > 抄送: > 主题: Re: [Discuss] Release of 0.10.0 > > Hi, > > I totally support treat time-based data partition as an experimental feature > in 0.10.0. > > Thanks Jialin for organizing such a long feature list! > > Really looking forward to 0.10.0 : ) > > Best, > ----------------------------------- > Zesong Sun > School of Software, Tsinghua University > > 孙泽嵩 > 清华大学 软件学院 > > > 2020年5月26日 09:20，[email protected] 写道： > > > > Wow，so many useful features! Looking forward to the version 0.10.0. > > > > > > > > Thanks! > > > > [email protected] > > > > > > From: Jialin Qiao > > Date: 2020-05-25 23:46 > > To: dev > > Subject: Re: [Discuss] Release of 0.10.0 > > Hi, > > > > The highly anticipated version 0.10.0 is coming soon! > > > > I summarize the release notes, please have a check :) > > > > # Apache IoTDB (incubating) 0.10.0 > > > > ## New Features > > > > * IOTDB-217 A new GROUPBY syntax, e.g., select avg(s1) from root.sg.d1.s1 > > GROUP BY ([1, 50), 5ms) > > * IOTDB-220 Add hot-load configuration function > > * IOTDB-275 allow using user defined JAVA_HOME and allow blank space in the > > JAVA_HOME > > * IOTDB-287 Allow domain in JDBC URL > > * IOTDB-292 Add load external tsfile feature > > * IOTDB-297 Support "show flush task info" > > * IOTDB-298 Support new Last point query. e.g, select last * from root > > * IOTDB-305 Add value filter function while executing align by device > > * IOTDB-309 add Dockerfiles for 0.8.1, 0.9.0, and 0.9.1 > > * IOTDB-313 Add RandomOnDiskUsableSpaceStrategy > > * IOTDB-323 Support insertRecords in session > > * IOTDB-337 Add timestamp precision properties for grafana > > * IOTDB-343 Add test method in session > > * IOTDB-396 Support new query clause: disable align, e.g., select * from > > root disable align > > * IOTDB-447 Support querying non-existing measurement and constant > > measurement > > * IOTDB-448 Add IN operation, e.g., where time in (1,2,3) > > * IOTDB-456 Support GroupByFill Query, e.g., select last_value(s1) from > > root.sg.d1 GROUP BY ([1, 10), 2ms) FILL(int32[previousUntilLast]) > > * IOTDB-467 The CLI displays query results in a batch manner > > * IOTDB-497 Support Apache Flink Connector with IoTDB > > * IOTDB-558 add text support for grafana > > * IOTDB-560 Support Apache Flink connecter with TsFile > > * IOTDB-565 MQTT Protocol Support, disabled by default, open in > > iotdb-engine.properties > > * IOTDB-574 Specify configuration when start iotdb > > * IOTDB-588 Add tags and attributes management > > * IOTDB-607 add batch create timeseries in native interface > > * IOTDB-612 add limit&offset to show timeseries > > * IOTDB-617 Support alter one time series's tag/attribute > > * IOTDB-630 Add a jdbc-like way to fetch data in session > > * IOTDB-640 Enable system admin sql (flush/merge) in JDBC or Other API > > * IOTDB-671 Add clear cache command > > * Support open and close time range in group by, e.g, [), (] > > * Online upgrade from 0.9.x > > * Support speical characters in path: -/+&%$#@ > > * IOTDB-446 Support path start with a digit, e.g., root.sg.12a > > * enable rpc compression in session pool > > * Make JDBC OSGi usable and added a feature file > > * Python: Support pypi distribution for Python Client > > > > ## Incompatible changes > > > > * IOTDB-138 Move All metadata query to usual query > > * IOTDB-322 upgrade to thrift 0.12.0-0.13.0 > > * IOTDB-325 Refactor Statistics in TsFile > > * IOTDB-419 Refactor the 'last' and 'first' aggregators to 'last_value' and > > 'first_value' > > * IOTDB-506 upgrade the rpc protocol to v2 to reject clients or servers > > that version < 0.10 > > * IOTDB-587 TsFile is upgraded to version 2 > > * IOTDB-593 add metaOffset in TsFileMetadata > > * IOTDB-597 Rename methods in Session: insertBatch to insertTablet, > > insertInBatch to insertRecords, insert to insertRecord > > * RPC is incompatible, you can not use client-v0.9 to connect with > > server-v0.10 > > * TsFile format is incompatible, will be upgraded when starting 0.10 > > * Refine exception code in narive api > > > > ## Miscellaneous changes > > > > * IOTDB-190 upgrade from antlr3 to antlr4 > > * IOTDB-418 new query engine > > * IOTDB-429 return empty dataset instead of throw exception, e.g., show > > child paths root.* > > * IOTDB-445 Unify the keyword of "timestamp" and "time" > > * IOTDB-450 Add design documents > > * IOTDB-498 Support date format "2020-02-10" > > * IOTDB-503 Add checkTimeseriesExists in java native api > > * IOTDB-605 Add more levels of index in TsFileMetadata for handling too > > many series in one device > > * IOTDB-625 Change default level number: root is level 0 > > * IOTDB-628 rename client to cli > > * IOTDB-621 Add Check isNull in Field for querying using session > > * IOTDB-632 Performance improve for PreviousFill/LinearFill > > * Allow "count timeseries" without a prefix path > > * Add max backup log file number > > * add rpc compression api in client and session module > > * Continue writing the last unclosed file > > * Move the vulnera-checks section into the apache-release profile to > > accelerate compile > > * Add metaquery in python example > > > > ## Bug Fixes > > > > * IOTDB-125 Potential Concurrency bug while deleting and inserting happen > > together > > * IOTDB-185 fix start-client failed on WinOS if there is blank space in the > > file path; let start-server.bat suport jdk12,13 etc > > * IOTDB-304 Fix bug of incomplete HDFS URI > > * IOTDB-341 Fix data type bug in grafana > > * IOTDB-346 Fix a bug of renaming tsfile in loading function > > * IOTDB-370 fix a concurrent problem in parsing sql > > * IOTDB-376 fix metric to show executeQuery > > * IOTDB-392 fix export CSV > > * IOTDB-393 Fix unclear error message for no privilege users > > * IOTDB-401 Correct the calculation of a chunk if there is no data in the > > chunk, do not flush empty chunk > > * IOTDB-412 Paths are not correctly deduplicated > > * IOTDB-420 Avoid encoding task dying silently > > * IOTDB-425 fix can't change the root password. > > * IOTDB-459 Fix calmem tool bug > > * IOTDB-470fix IllegalArgumentException when there exists 0 byte TsFile > > * IOTDB-529 Relative times and NOW() operator cannot be used in Group By > > * IOTDB-531 fix issue when grafana visualize boolean data > > * IOTDB-546 Fix show child paths statement doesn't show quotation marks > > * IOTDB-643 Concurrent queries cause BufferUnderflowException when storage > > in HDFS > > * IOTDB-663 Fix query cache OOM while executing query > > * IOTDB-664 Win -e option > > * IOTDB-669 fix getting two columns bug while ”show devices“ in session > > * fix concurrent auto create schema conflict bug > > * fix meet incompatible file error in restart > > * Fix bugs of set core-site.xml and hdfs-site.xml paths in HDFS storage > > * fix execute flush command while inserting bug > > * Fix sync schema pos bug > > * Fix batch execution bug, the following sqls will all fail after one error > > sql > > > > > > Thanks, > > -- > > Jialin Qiao > > School of Software, Tsinghua University > > > > 乔嘉林 > > 清华大学 软件学院 > > > >> -----原始邮件----- > >> 发件人: "Xiangdong Huang" <[email protected]> > >> 发送时间: 2020-05-25 23:36:42 (星期一) > >> 收件人: [email protected] > >> 抄送: > >> 主题: Re: [Discuss] Release of 0.10.0 > >> > >> Hi all, > >> > >> Though we introduced the feature that supporting time-based data partition, > >> it may have some side-effect for query performance in some cases. > >> So, I'd like to mark this feature as experimental and disable it by > >> default. We can enable it by default until we fixed the performance issue > >> in next version. > >> > >> Then, I'd like to start to organize the change list of v0.10 with @Jialin. > >> > >> Best, > >> ----------------------------------- > >> Xiangdong Huang > >> School of Software, Tsinghua University > >> > >> 黄向东 > >> 清华大学 软件学院 > >> > >> > >> Xiangdong Huang <[email protected]> 于2020年5月21日周四 上午9:34写道： > >> > >>> Hi, > >>> > >>> I suggest to run a performance comparison for v0.9 and v0.10 first and > >>> then start the release. > >>> We are doing that. > >>> > >>> Best, > >>> ----------------------------------- > >>> Xiangdong Huang > >>> School of Software, Tsinghua University > >>> > >>> 黄向东 > >>> 清华大学 软件学院 > >>> > >>> > >>> Xiangdong Huang <[email protected]> 于2020年5月20日周三 下午3:08写道： > >>> > >>>> Hi, > >>>> > >>>>> Are there any features left that one NEEDS in 0.10 that are currently > >>>> in work? > >>>> > >>>> IMO, we do not need to wait for developing other features anymore before > >>>> releasing v0.10.0, but we can "merge as many PRs as possible" especially > >>>> for those bug-fix PRs. > >>>> > >>>> Best, > >>>> > >>>> ----------------------------------- > >>>> Xiangdong Huang > >>>> School of Software, Tsinghua University > >>>> > >>>> 黄向东 > >>>> 清华大学 软件学院 > >>>> > >>>> > >>>> Julian Feinauer <[email protected]> 于2020年5月20日周三 下午2:33写道： > >>>> > >>>>> Hi, > >>>>> > >>>>> I suggest to always to a release branch as best practice as it always > >>>>> help you if you need to create a fix release like 0.10.1 (if you want to > >>>>> keep working on features on master branch). > >>>>> But yes I agree, we should try to merge as many PRs as possible. > >>>>> > >>>>> Are there any features left that one NEEDS in 0.10 that are currently in > >>>>> work? > >>>>> > >>>>> Julian > >>>>> > >>>>> Am 20.05.20, 08:29 schrieb "Xiangdong Huang" <[email protected]>: > >>>>> > >>>>> Hi, > >>>>> > >>>>> The grafana issue has been fixed. > >>>>> > >>>>> As we have so many PRs opened now, we need to check when to fork a > >>>>> new > >>>>> branch rel/0.10. > >>>>> > >>>>> Actually, only one PR needs to be pay attention [1]. > >>>>> > >>>>> IMO, I want to merge it into the master ASAP to avoid more conflicts. > >>>>> Otherwise, there will be too many differences between rel/0.10 and > >>>>> master. > >>>>> But as it modified many codes and not all of them are tested, I am > >>>>> afraid > >>>>> whether it brings unstable factors. > >>>>> > >>>>> [1] https://github.com/apache/incubator-iotdb/pull/1169 > >>>>> > >>>>> Best, > >>>>> ----------------------------------- > >>>>> Xiangdong Huang > >>>>> School of Software, Tsinghua University > >>>>> > >>>>> 黄向东 > >>>>> 清华大学 软件学院 > >>>>> > >>>>> > >>>>> Julian Feinauer <[email protected]> 于2020年5月18日周一 > >>>>> 下午6:44写道： > >>>>> > >>>>>> Hey, > >>>>>> > >>>>>> that looks pretty cool indeed. > >>>>>> Has anyone tested the IoTDB Grafana Bridge? > >>>>>> I had issues with it at some point in master branch, not sure > >>>>> about the > >>>>>> latest version? > >>>>>> > >>>>>> But sounds really cool! > >>>>>> > >>>>>> Julian > >>>>>> > >>>>>> Am 18.05.20, 12:08 schrieb "Haonan Hou" <[email protected]>: > >>>>>> > >>>>>> Hi, > >>>>>> > >>>>>> Right now the upgrade tool for upgrading IoTDB v0.9.x to v0.10 > >>>>> has > >>>>>> been developed. We have also finished the tests about it and > >>>>> everything > >>>>>> works great. I think it’s the right time to release the v0.10.0. > >>>>>> > >>>>>> Anyone hope to be the RM of 0.10.0? > >>>>>> > >>>>>> Best, > >>>>>> Haonan Hou > >>>>>> > >>>>>> > >>>>> > >>>>> -- > >> ----------------------------------- > >> Xiangdong Huang > >> School of Software, Tsinghua University > >> > >> 黄向东 > >> 清华大学 软件学院 >
