[DISCUSS] Optimize TsFile structure to reduce unnecessary IO

Hi, In the current TsFile structure, PageHeader and PageData are compactly put together in a Chunk, like a chain structure [1]. The basic unit that is read from the hard disk each time is the Chunk. For the query scenario of device * sensor, it would appear that we read too much data, so we c

[jira] [Commented] (IOTDB-512) When I using [select count(*) from root.*.*] in iotdb-cli, I got an error message like : OutOfMemoryError: Java heap space

[ https://issues.apache.org/jira/browse/IOTDB-512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17043237#comment-17043237 ] FengQingxin commented on IOTDB-512: --- Hi, I have test this sql with the lastest code of

[jira] [Created] (IOTDB-514) To support aggregation in the distributed version

Tian Jiang created IOTDB-514: Summary: To support aggregation in the distributed version Key: IOTDB-514 URL: https://issues.apache.org/jira/browse/IOTDB-514 Project: Apache IoTDB Issue Type: Impr

[jira] [Commented] (IOTDB-514) To support aggregation in the distributed version

[ https://issues.apache.org/jira/browse/IOTDB-514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17043464#comment-17043464 ] Yuxin Zhang commented on IOTDB-514: --- hi, I'm fixing this issue. > To support aggregatio

[jira] [Closed] (IOTDB-514) To support aggregation in the distributed version

[ https://issues.apache.org/jira/browse/IOTDB-514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jialin Qiao closed IOTDB-514. - Fix Version/s: 0.10.0-SNAPSHOT Resolution: Fixed > To support aggregation in the distributed versio

Re: Considering some ideas about IoTDB for GSoc

Hi, Thanks, Kevin and Willem. I have created 5 issues for introducing my ideas [1]. Please feel free to add your ideas. Now I have some questions, according to [2]: > Prospective mentors must join the ment...@community.apache.org mailing list, this is where mentor specific issues are dealt with

[jira] [Created] (IOTDB-515) A complete Apache IoTDB JDBC driver and integration with JDBC driver based tools (DBeaver and Apache Zeppelin)

Xiangdong Huang created IOTDB-515: - Summary: A complete Apache IoTDB JDBC driver and integration with JDBC driver based tools (DBeaver and Apache Zeppelin) Key: IOTDB-515 URL: https://issues.apache.org/jira/browse

[jira] [Created] (IOTDB-516) Apache IoTDB trigger module for streaming cumputing

Xiangdong Huang created IOTDB-516: - Summary: Apache IoTDB trigger module for streaming cumputing Key: IOTDB-516 URL: https://issues.apache.org/jira/browse/IOTDB-516 Project: Apache IoTDB Issu

[jira] [Created] (IOTDB-517) Apache IoTDB Database Connection Pool and integration with some web framework

Xiangdong Huang created IOTDB-517: - Summary: Apache IoTDB Database Connection Pool and integration with some web framework Key: IOTDB-517 URL: https://issues.apache.org/jira/browse/IOTDB-517 Project:

[jira] [Created] (IOTDB-518) Apache IoTDB integration with MiNiFI/NiFi

Xiangdong Huang created IOTDB-518: - Summary: Apache IoTDB integration with MiNiFI/NiFi Key: IOTDB-518 URL: https://issues.apache.org/jira/browse/IOTDB-518 Project: Apache IoTDB Issue Type: Wi

[jira] [Created] (IOTDB-519) Apache IoTDB integration with Prometheus

Xiangdong Huang created IOTDB-519: - Summary: Apache IoTDB integration with Prometheus Key: IOTDB-519 URL: https://issues.apache.org/jira/browse/IOTDB-519 Project: Apache IoTDB Issue Type: Wis

[jira] [Created] (IOTDB-520) Result of IBatchReader should not cross partition

Tian Jiang created IOTDB-520: Summary: Result of IBatchReader should not cross partition Key: IOTDB-520 URL: https://issues.apache.org/jira/browse/IOTDB-520 Project: Apache IoTDB Issue Type: Impr

[jira] [Created] (IOTDB-521) Apache IoTDB website supports static documents and search engine

Xiangdong Huang created IOTDB-521: - Summary: Apache IoTDB website supports static documents and search engine Key: IOTDB-521 URL: https://issues.apache.org/jira/browse/IOTDB-521 Project: Apache IoTDB

Re: Considering some ideas about IoTDB for GSoc

Hi, I move the issues from comdev to IoTDB jira track. from IoTDB-515 to IOTDB 519 and IoTDB-520. Best, --- Xiangdong Huang School of Software, Tsinghua University 黄向东 清华大学 软件学院 Xiangdong Huang 于2020年2月25日周二 上午10:37写道： > Hi, > > Thanks, Kevin and Willem. > >

[jira] [Closed] (IOTDB-499) Add QueryEngine design documents

[ https://issues.apache.org/jira/browse/IOTDB-499?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] XiangweiWei closed IOTDB-499. - Resolution: Fixed > Add QueryEngine design documents > > >