svn commit: r66378 [1/3] - /release/iotdb/1.3.0/

haonan Mon, 01 Jan 2024 07:03:02 -0800

Author: haonan
Date: Mon Jan  1 15:02:56 2024
New Revision: 66378

Log:
update 1.3.0


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    release/iotdb/1.3.0/
    release/iotdb/1.3.0/README.md
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Added: release/iotdb/1.3.0/README.md
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+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+[English](./README.md) | [ä¸æ](./README_ZH.md)
+
+# IoTDB
+[![Unit-Test](https://github.com/apache/iotdb/actions/workflows/unit-test.yml/badge.svg)](https://github.com/apache/iotdb/actions/workflows/unit-test.yml)
+[![codecov](https://codecov.io/github/apache/iotdb/graph/badge.svg?token=ejF3UGk0Nv)](https://codecov.io/github/apache/iotdb)
+[![GitHub 
release](https://img.shields.io/github/release/apache/iotdb.svg)](https://github.com/apache/iotdb/releases)
+[![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
+![](https://github-size-badge.herokuapp.com/apache/iotdb.svg)
+![](https://img.shields.io/github/downloads/apache/iotdb/total.svg)
+![](https://img.shields.io/badge/platform-win%20%7C%20macos%20%7C%20linux-yellow.svg)
+![](https://img.shields.io/badge/java--language-1.8%20%7C%2011%20%7C%2017-blue.svg)
+[![IoTDB 
Website](https://img.shields.io/website-up-down-green-red/https/shields.io.svg?label=iotdb-website)](https://iotdb.apache.org/)
+[![Maven 
Version](https://maven-badges.herokuapp.com/maven-central/org.apache.iotdb/iotdb-parent/badge.svg)](http://search.maven.org/#search|gav|1|g:"org.apache.iotdb")
+[![Gitpod 
Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/apache/iotdb)
+[![Slack 
Status](https://img.shields.io/badge/slack-join_chat-white.svg?logo=slack&style=social)](https://join.slack.com/t/apacheiotdb/shared_invite/zt-qvso1nj8-7715TpySZtZqmyG5qXQwpg)
+
+# Overview
+
+IoTDB (Internet of Things Database) is a data management system for time 
series data, which provides users with specific services including data 
collection, storage and analysis. Due to its light weight structure, high 
performance and usable features, together with its seamless integration with 
the Hadoop and Spark ecology, IoTDB meets the requirements of massive dataset 
storage, high throughput data input, and complex data analysis in the 
industrial IoT field.
+
+# Main Features
+
+Main features of IoTDB are as follows:
+
+1. Flexible deployment strategy. IoTDB provides users a one-click installation 
tool on either the cloud platform or the terminal devices, and a data 
synchronization tool bridging the data on cloud platform and terminals.
+2. Low cost on hardware. IoTDB can reach a high compression ratio of disk 
storage.
+3. Efficient directory structure. IoTDB supports efficient organization for 
complex time series data structures from intelligent networking devices, 
organization for time series data from devices of the same type, and fuzzy 
searching strategy for massive and complex directory of time series data.
+4. High-throughput read and write. IoTDB supports millions of low-power 
devices' strong connection data access, high-speed data read and write for 
intelligent networking devices and mixed devices mentioned above.
+5. Rich query semantics. IoTDB supports time alignment for time series data 
across devices and measurements, computation in time series field (frequency 
domain transformation) and rich aggregation function support in time dimension.
+6. Easy to get started. IoTDB supports SQL-Like language, JDBC standard API 
and import/export tools which is easy to use.
+7. Seamless integration with state-of-the-practice Open Source Ecosystem. 
IoTDB supports analysis ecosystems such as, Hadoop, Spark, and visualization 
tool, such as, Grafana.
+
+For the latest information about IoTDB, please visit [IoTDB official 
website](https://iotdb.apache.org/). If you encounter any problems or identify 
any bugs while using IoTDB, please report an issue in 
[jira](https://issues.apache.org/jira/projects/IOTDB/issues).
+
+<!-- TOC -->
+
+## Outline
+
+- [IoTDB](#iotdb)
+- [Overview](#overview)
+- [Main Features](#main-features)
+  - [Outline](#outline)
+- [Quick Start](#quick-start)
+  - [Prerequisites](#prerequisites)
+  - [Installation](#installation)
+    - [Build from source](#build-from-source)
+    - [Configurations](#configurations)
+  - [Start](#start)
+    - [Start IoTDB](#start-iotdb)
+    - [Use IoTDB](#use-iotdb)
+      - [Use Cli](#use-cli)
+      - [Basic commands for IoTDB](#basic-commands-for-iotdb)
+    - [Stop IoTDB](#stop-iotdb)
+  - [Only build server](#only-build-server)
+  - [Only build cli](#only-build-cli)
+  - [Usage of CSV Import and Export Tool](#usage-of-csv-import-and-export-tool)
+
+<!-- /TOC -->
+
+# Quick Start
+
+This short guide will walk you through the basic process of using IoTDB. For a 
more detailed introduction, please visit our website's [User 
Guide](https://iotdb.apache.org/UserGuide/Master/QuickStart/QuickStart.html).
+
+## Prerequisites
+
+To use IoTDB, you need to have:
+
+1. Java >= 1.8 (1.8, 11 to 17 are verified. Please make sure the environment 
path has been set accordingly).
+2. Maven >= 3.6 (If you want to compile and install IoTDB from source code).
+3. Set the max open files num as 65535 to avoid "too many open files" error.
+4. (Optional) Set the somaxconn as 65535 to avoid "connection reset" error 
when the system is under high load.
+    ```
+    # Linux
+    > sudo sysctl -w net.core.somaxconn=65535
+   
+    # FreeBSD or Darwin
+    > sudo sysctl -w kern.ipc.somaxconn=65535
+    ```
+### Linux
+
+(This guide is based on an installation of Ubuntu 22.04)
+
+#### Git
+
+Make sure `Git` is installed, if it's missing, simply install it via:
+
+    sudo apt install git
+
+#### Java
+
+Make sure `Java` is installed, if it's missing, simply install it via:
+
+    sudo apt install default-jdk
+
+#### Flex
+
+    sudo apt install flex
+
+#### Bison
+
+    sudo apt install bison
+
+#### Boost
+
+    sudo apt install libboost-all-dev
+
+#### OpenSSL header files
+
+Usually OpenSSL is already installed, however it's missing the header files we 
need to compile.
+So ensure these are installed:
+
+    sudo apt install libssl-dev
+
+### Mac OS
+
+#### Git
+
+First ensure `git` works.
+
+Usually on a new Mac, as soon as you simply type `git` in a `Terminal` window, 
a popup will come and ask if you want to finish installing the Mac developer 
tools. 
+Just say yes.
+As soon as this is finished, you are free to use `git`.
+
+#### Homebrew
+
+Then install `Homebrew` - If this hasn't been installed yet, as we are going 
to be installing everything using `Homebrew`.
+
+    /bin/bash -c "$(curl -fsSL 
https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+
+#### Java
+
+As soon as that's done install `Java`, if this hasn't been installed yet:
+
+    brew install java
+
+Depending on your version of Homebrew, it will tell you to do one of the 
following (Depending on the type of processor in your device).
+
+Mainly on the Intel-based models:
+
+    sudo ln -sfn /usr/local/opt/openjdk/libexec/openjdk.jdk 
/Library/Java/JavaVirtualMachines/openjdk.jdk
+
+Mainly on the ARM-based models:
+
+    sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk 
/Library/Java/JavaVirtualMachines/openjdk.jdk
+
+#### CPP Prerequisites 
+
+Building `Thrift` requires us to add two more dependencies to the picture.
+
+This however is only needed when enabling the `compile-cpp` profile:
+
+    brew install boost
+    brew install bison
+    brew install openssl
+
+### Windows
+
+#### Chocolatey
+
+Then install `Chocolatey` - If this hasn't been installed yet, as we are going 
to be installing everything using `Chocolatey`.
+
+https://chocolatey.org/install
+
+#### Git
+
+    choco install git.install
+
+#### Java
+
+    choco install openjdk
+
+#### Visual Studio 19 2022
+
+    choco install visualstudio2022community
+    choco install visualstudio2022buildtools
+    choco install visualstudio2022-workload-nativedesktop
+
+#### FLex / Bison
+
+    choco install winflexbison
+
+#### Boost
+
+    choco install boost-msvc-14.2
+
+#### OpenSSL
+
+    choco install openssl
+
+## Installation
+
+IoTDB provides three installation methods, you can refer to the following 
suggestions, choose the one fits you best:
+
+* Installation from source code. If you need to modify the code yourself, you 
can use this method.
+* Installation from binary files. Download the binary files from the official 
website. This is the recommended method, in which you will get a binary 
released package which is out-of-the-box.
+* Using Dockerï¼The path to the dockerfile is 
[here](https://github.com/apache/iotdb/tree/master/docker/src/main)
+
+
+Here in the Quick Start, we give a brief introduction of using source code to 
install IoTDB. For further information, please refer to [User 
Guide](https://iotdb.apache.org/UserGuide/Master/QuickStart/QuickStart.html).
+
+## Build from source
+
+### Prepare Thrift compiler
+
+Skip this chapter if you are using Windows. 
+
+As we use Thrift for our RPC module (communication and
+protocol definition), we involve Thrift during the compilation, so Thrift 
compiler 0.13.0 (or
+higher) is required to generate Thrift Java code. Thrift officially provides 
binary compiler for
+Windows, but unfortunately, they do not provide that for Unix OSs. 
+
+If you have permission to install new softwares, use `apt install` or `yum 
install` or `brew install`
+to install the Thrift compiler (If you already have installed the thrift 
compiler, skip this step).
+Then, you may add the following parameter
+when running Maven: 
`-Dthrift.download-url=http://apache.org/licenses/LICENSE-2.0.txt 
-Dthrift.exec.absolute.path=<YOUR LOCAL THRIFT BINARY FILE>`.
+
+If not, then you have to compile the thrift compiler, and it requires you 
install a boost library first.
+Therefore, we compiled a Unix  compiler ourselves and put it onto GitHub, and 
with the help of a
+maven plugin, it will be  downloaded automatically during compilation. 
+This compiler works fine with gcc8 or later, Ubuntu  MacOS, and CentOS, but 
previous versions 
+and other OSs are not guaranteed.
+
+If you can not download the thrift compiler automatically because of network 
problem, you can download 
+it yourself, and then either:
+rename your thrift file to 
`{project_root}\thrift\target\tools\thrift_0.12.0_0.13.0_linux.exe`;
+or, add Maven commands:
+`-Dthrift.download-url=http://apache.org/licenses/LICENSE-2.0.txt 
-Dthrift.exec.absolute.path=<YOUR LOCAL THRIFT BINARY FILE>`.
+
+### Compile IoTDB
+
+You can download the source code from:
+
+```
+git clone https://github.com/apache/iotdb.git
+```
+
+The default dev branch is the master branch, If you want to use a released 
version x.x.x:
+
+```
+git checkout vx.x.x
+```
+
+Or checkout to the branch of a big version, e.g., the branch of 1.0 is rel/1.0
+
+```
+git checkout rel/x.x
+```
+
+### Build IoTDB from source
+
+Under the root path of iotdb:
+
+```
+> mvn clean package -pl distribution -am -DskipTests
+```
+
+After being built, the IoTDB distribution is located at the folder: 
"distribution/target".
+
+
+### Only build cli
+
+Under the iotdb/iotdb-client path:
+
+```
+> mvn clean package -pl cli -am -DskipTests
+```
+
+After being built, the IoTDB cli is located at the folder "cli/target".
+
+### Build Others
+
+Using `-P compile-cpp` for compiling cpp client (For more details, read 
client-cpp's Readme file.)
+
+**NOTE: Directories "`thrift/target/generated-sources/thrift`", 
"`thrift-sync/target/generated-sources/thrift`",
+"`thrift-cluster/target/generated-sources/thrift`", 
"`thrift-influxdb/target/generated-sources/thrift`" 
+and "`antlr/target/generated-sources/antlr4`" need to be added to sources 
roots to avoid compilation errors in the IDE.**
+
+**In IDEA, you just need to right click on the root project name and choose 
"`Maven->Reload Project`" after 
+you run `mvn package` successfully.**
+
+### Configurations
+
+configuration files are under "conf" folder
+
+  * environment config module (`datanode-env.bat`, `datanode-env.sh`),
+  * system config module (`iotdb-datanode.properties`)
+  * log config module (`logback.xml`).
+
+For more information, please see [Config 
Manual](https://iotdb.apache.org/UserGuide/Master/Reference/DataNode-Config-Manual.html).
+
+## Start
+
+You can go through the following steps to test the installation. If there is 
no error returned after execution, the installation is completed.
+
+### Start IoTDB
+
+Users can start 1C1D IoTDB by the start-standalone script under the sbin 
folder.
+
+```
+# Unix/OS X
+> sbin/start-standalone.sh
+
+# Windows
+> sbin\start-standalone.bat
+```
+
+### Use IoTDB
+
+#### Use Cli
+
+IoTDB offers different ways to interact with server, here we introduce the 
basic steps of using Cli tool to insert and query data.
+
+After installing IoTDB, there is a default user 'root', its default password 
is also 'root'. Users can use this
+default user to login Cli to use IoTDB. The startup script of Cli is the 
start-cli script in the folder sbin. When executing the script, user should 
assign
+IP, PORT, USER_NAME and PASSWORD. The default parameters are "-h 127.0.0.1 -p 
6667 -u root -pw -root".
+
+Here is the command for starting the Cli:
+
+```
+# Unix/OS X
+> sbin/start-cli.sh -h 127.0.0.1 -p 6667 -u root -pw root
+
+# Windows
+> sbin\start-cli.bat -h 127.0.0.1 -p 6667 -u root -pw root
+```
+
+The command line cli is interactive, so you should see the welcome logo and 
statements if everything is ready:
+
+```
+ _____       _________  ______   ______
+|_   _|     |  _   _  ||_   _ `.|_   _ \
+  | |   .--.|_/ | | \_|  | | `. \ | |_) |
+  | | / .'`\ \  | |      | |  | | |  __'.
+ _| |_| \__. | _| |_    _| |_.' /_| |__) |
+|_____|'.__.' |_____|  |______.'|_______/  version x.x.x
+
+
+IoTDB> login successfully
+IoTDB>
+```
+
+#### Basic commands for IoTDB
+
+Now, let us introduce the way of creating timeseries, inserting data and 
querying data.
+
+The data in IoTDB is organized as timeseries. Each timeseries includes 
multiple data-time pairs, and is owned by a database. Before defining a 
timeseries, we should define a database using CREATE DATABASE first, and here 
is an example:
+
+```
+IoTDB> CREATE DATABASE root.ln
+```
+
+We can also use SHOW DATABASES to check the database being created:
+
+```
+IoTDB> SHOW DATABASES
++-------------+
+|     Database|
++-------------+
+|      root.ln|
++-------------+
+Total line number = 1
+```
+
+After the database is set, we can use CREATE TIMESERIES to create a new 
timeseries. When creating a timeseries, we should define its data type and the 
encoding scheme. Here we create two timeseries:
+
+```
+IoTDB> CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, 
ENCODING=PLAIN
+IoTDB> CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, 
ENCODING=RLE
+```
+
+In order to query the specific timeseries, we can use SHOW TIMESERIES <Path>. 
<Path> represent the location of the timeseries. The default value is "null", 
which queries all the timeseries in the system(the same as using "SHOW 
TIMESERIES root"). Here are some examples:
+
+1. Querying all timeseries in the system:
+
+```
+IoTDB> SHOW TIMESERIES
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|                   
Timeseries|Alias|Database|DataType|Encoding|Compression|Tags|Attributes|
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|root.ln.wf01.wt01.temperature| null|      root.ln|   FLOAT|     RLE|     
SNAPPY|null|      null|
+|     root.ln.wf01.wt01.status| null|      root.ln| BOOLEAN|   PLAIN|     
SNAPPY|null|      null|
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+Total line number = 2
+```
+
+2. Querying a specific timeseries(root.ln.wf01.wt01.status):
+
+```
+IoTDB> SHOW TIMESERIES root.ln.wf01.wt01.status
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|              
timeseries|alias|database|dataType|encoding|compression|tags|attributes|
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|root.ln.wf01.wt01.status| null|      root.ln| BOOLEAN|   PLAIN|     
SNAPPY|null|      null|
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+Total line number = 1
+```
+
+Insert timeseries data is a basic operation of IoTDB, you can use âINSERTâ 
command to finish this. Before insertion, you should assign the timestamp and 
the suffix path name:
+
+```
+IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status) values(100,true);
+IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status,temperature) 
values(200,false,20.71)
+```
+
+The data that you have just inserted will display as follows:
+
+```
+IoTDB> SELECT status FROM root.ln.wf01.wt01
++------------------------+------------------------+
+|                    Time|root.ln.wf01.wt01.status|
++------------------------+------------------------+
+|1970-01-01T00:00:00.100Z|                    true|
+|1970-01-01T00:00:00.200Z|                   false|
++------------------------+------------------------+
+Total line number = 2
+```
+
+You can also query several timeseries data using one SQL statement:
+
+```
+IoTDB> SELECT * FROM root.ln.wf01.wt01
++------------------------+-----------------------------+------------------------+
+|                    
Time|root.ln.wf01.wt01.temperature|root.ln.wf01.wt01.status|
++------------------------+-----------------------------+------------------------+
+|1970-01-01T00:00:00.100Z|                         null|                    
true|
+|1970-01-01T00:00:00.200Z|                        20.71|                   
false|
++------------------------+-----------------------------+------------------------+
+Total line number = 2
+```
+
+To change the time zone in Cli, you can use the following SQL:
+
+```
+IoTDB> SET time_zone=+08:00
+Time zone has set to +08:00
+IoTDB> SHOW time_zone
+Current time zone: Asia/Shanghai
+```
+
+Add then the query result will show using the new time zone.
+
+```
+IoTDB> SELECT * FROM root.ln.wf01.wt01
++-----------------------------+-----------------------------+------------------------+
+|                         
Time|root.ln.wf01.wt01.temperature|root.ln.wf01.wt01.status|
++-----------------------------+-----------------------------+------------------------+
+|1970-01-01T08:00:00.100+08:00|                         null|                  
  true|
+|1970-01-01T08:00:00.200+08:00|                        20.71|                  
 false|
++-----------------------------+-----------------------------+------------------------+
+Total line number = 2
+```
+
+The commands to exit the Cli are:
+
+```
+IoTDB> quit
+or
+IoTDB> exit
+```
+
+For more information about the commands supported by IoTDB SQL, please see 
[User 
Guide](https://iotdb.apache.org/UserGuide/Master/QuickStart/QuickStart.html).
+
+### Stop IoTDB
+
+The server can be stopped with "ctrl-C" or the following script:
+
+```
+# Unix/OS X
+> sbin/stop-standalone.sh
+
+# Windows
+> sbin\stop-standalone.bat
+```
+
+# Usage of CSV Import and Export Tool
+
+see [Usage of CSV Import and Export 
Tool](https://iotdb.apache.org/UserGuide/Master/Maintenance-Tools/CSV-Tool.html)
+
+# Frequent Questions for Compiling
+see [Frequent Questions when Compiling the Source 
Code](https://iotdb.apache.org/Development/ContributeGuide.html#_Frequent-Questions-when-Compiling-the-Source-Code)
+
+# Contact Us
+### QQ Group
+
+* Apache IoTDB User Group: 659990460
+
+### Wechat Group
+
+* Add friend: `tietouqiao` or `liutaohua001`, and then we'll invite you to the 
group.
+
+### Slack
+
+* [Slack 
channel](https://join.slack.com/t/apacheiotdb/shared_invite/zt-qvso1nj8-7715TpySZtZqmyG5qXQwpg)
+
+see [Join the community](https://github.com/apache/iotdb/issues/1995) for more!

Added: release/iotdb/1.3.0/README_ZH.md
==============================================================================
--- release/iotdb/1.3.0/README_ZH.md (added)
+++ release/iotdb/1.3.0/README_ZH.md Mon Jan  1 15:02:56 2024
@@ -0,0 +1,398 @@
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+[English](./README.md) | [ä¸æ](./README_ZH.md)
+
+# IoTDB
+[![Main Mac and 
Linux](https://github.com/apache/iotdb/actions/workflows/main-unix.yml/badge.svg)](https://github.com/apache/iotdb/actions/workflows/main-unix.yml)
+[![Main 
Win](https://github.com/apache/iotdb/actions/workflows/main-win.yml/badge.svg)](https://github.com/apache/iotdb/actions/workflows/main-win.yml)<!--[![coveralls](https://coveralls.io/repos/github/apache/iotdb/badge.svg?branch=master)](https://coveralls.io/repos/github/apache/iotdb/badge.svg?branch=master)-->
+[![GitHub 
release](https://img.shields.io/github/release/apache/iotdb.svg)](https://github.com/apache/iotdb/releases)
+[![License](https://img.shields.io/badge/license-Apache%202-4EB1BA.svg)](https://www.apache.org/licenses/LICENSE-2.0.html)
+![](https://github-size-badge.herokuapp.com/apache/iotdb.svg)
+![](https://img.shields.io/github/downloads/apache/iotdb/total.svg)
+![](https://img.shields.io/badge/platform-win%20%7C%20macos%20%7C%20linux-yellow.svg)
+![](https://img.shields.io/badge/java--language-1.8%20%7C%2011%20%7C%2017-blue.svg)
+[![Language grade: 
Java](https://img.shields.io/lgtm/grade/java/g/apache/iotdb.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/apache/iotdb/context:java)
+[![IoTDB 
Website](https://img.shields.io/website-up-down-green-red/https/shields.io.svg?label=iotdb-website)](https://iotdb.apache.org/)
+[![Maven 
Version](https://maven-badges.herokuapp.com/maven-central/org.apache.iotdb/iotdb-parent/badge.svg)](http://search.maven.org/#search|gav|1|g:"org.apache.iotdb")
+[![Slack 
Status](https://img.shields.io/badge/slack-join_chat-white.svg?logo=slack&style=social)](https://join.slack.com/t/apacheiotdb/shared_invite/zt-qvso1nj8-7715TpySZtZqmyG5qXQwpg)
+
+# ç®ä»
+IoTDB (Internet of Things Database) 
æ¯ä¸æ¬¾æ¶åºæ°æ®åºç®¡çç³»ç»ï¼å¯ä»¥ä¸ºç¨æ·æä¾æ°æ®æ¶éãåå¨ååæçæå¡ãIoTDBç±äºå
¶è½»éçº§æ¶æãé«æ§è½åé«å¯ç¨çç¹æ§ï¼ä»¥åä¸ Hadoop å Spark 
çæçæ ç¼éæï¼æ»¡è¶³äºå·¥ä¸ IoT 
é¢åä¸æµ·éæ°æ®åå¨ãé«ååéæ°æ®åå
¥åå¤ææ°æ®æ¥è¯¢åæçéæ±ã
+
+# ä¸»è¦ç¹ç¹
+
+IoTDBçä¸»è¦ç¹ç¹å¦ä¸:
+
+1. 
çµæ´»çé¨ç½²çç¥ãIoTDBä¸ºç¨æ·æä¾äºä¸ä¸ªå¨äºå¹³å°æç»ç«¯è®¾å¤ä¸çä¸é®å®è£
å·¥å·ï¼ä»¥åä¸ä¸ªè¿æ¥äºå¹³å°åç»ç«¯ä¸çæ°æ®çæ°æ®åæ¥å·¥å
·ã
+2. ç¡¬ä»¶ææ¬ä½ãIoTDBå¯ä»¥è¾¾å°å¾é«çç£çåå¨åç¼©æ¯ã
+3. 
é«æçç®å½ç»æãIoTDBæ¯ææºè½ç½ç»è®¾å¤å¯¹å¤ææ¶é´åºåæ°æ®ç»æçé«æç»ç»ï¼åç±»è®¾å¤å¯¹æ¶é´åºåæ°æ®çç»ç»ï¼æµ·éå¤ææ¶é´åºåæ°æ®ç®å½çæ¨¡ç³æç´¢çç¥ã
+4. 
é«ååéè¯»åãIoTDBæ¯ææ°ä»¥ç¾ä¸è®¡çä½åèè®¾å¤çå¼ºè¿æ¥æ°æ®è®¿é®ãé«éæ°æ®è¯»åï¼éç¨äºä¸è¿°æºè½ç½ç»è®¾å¤åæ··åè®¾å¤ã
+5. 
ä¸°å¯çæ¥è¯¢è¯ä¹ãIoTDBæ¯æè·¨è®¾å¤åæµéçæ¶é´åºåæ°æ®çæ¶é´å¯¹é½ãæ¶é´åºååæ®µçè®¡ç®(é¢åè½¬æ¢)åæ¶é´ç»´åº¦çä¸°å¯èåå½æ°æ¯æã
+6. å¦ä¹ ææ¬éå¸¸ä½ãIoTDBæ¯æç±»ä¼¼sqlçè¯è¨ãJDBCæ 
åAPIåæäºä½¿ç¨çå¯¼å¥/å¯¼åºå·¥å·ã
+7. ä¸åè¿çå¼æ¾æºç çæç³»ç»çæ 
ç¼éæãIoTDBæ¯æåæçæç³»ç»ï¼å¦HadoopãSparkåå¯è§åå·¥å
·(å¦Grafana)ã
+
+æå
³IoTDBçææ°ä¿¡æ¯ï¼è¯·è®¿é®[IoTDBå®æ¹ç½ç«](https://iotdb.apache.org/)ãå¦ææ¨å¨ä½¿ç¨IoTDBæ¶éå°ä»»ä½é®é¢æåç°ä»»ä½bugï¼è¯·å¨[jira]ä¸æäº¤(https://issues.apache.org/jira/projects/IOTDB/issues)ã
+
+<!-- TOC -->
+
+## ç®å½
+
+- [IoTDB](#iotdb)
+- [ç®ä»](#ç®ä»)
+- [ä¸»è¦ç¹ç¹](#ä¸»è¦ç¹ç¹)
+  - [ç®å½](#ç®å½)
+- [å¿«éå¼å§](#å¿«éå¼å§)
+  - [ç¯å¢åå¤](#ç¯å¢åå¤)
+  - [å®è£](#å®è£)
+    - [ä»æºç æå»º](#ä»æºç æå»º)
+      - [éç½®](#éç½®)
+  - [å¼å§](#å¼å§)
+    - [å¯å¨ IoTDB](#å¯å¨-iotdb)
+    - [ä½¿ç¨ IoTDB](#ä½¿ç¨-iotdb)
+      - [ä½¿ç¨ Cli å½ä»¤è¡](#ä½¿ç¨-cli-å½ä»¤è¡)
+      - [åºæ¬ç IoTDB å½ä»¤](#åºæ¬ç-iotdb-å½ä»¤)
+    - [åæ¢ IoTDB](#åæ¢-iotdb)
+  - [åªç¼è¯ server](#åªç¼è¯-server)
+  - [åªç¼è¯ cli](#åªç¼è¯-cli)
+  - [å¯¼å¥å¯¼åºCSVå·¥å·](#å¯¼å¥å¯¼åºCSVå·¥å·)
+
+<!-- /TOC -->
+
+# å¿«éå¼å§
+
+è¿ç¯ç®ççæåå°å¸¦æ¨äºè§£ä½¿ç¨IoTDBçåºæ¬è¿ç¨ãå¦éæ´è¯¦ç»çä»ç»ï¼è¯·è®¿é®æä»¬çç½ç«[ç¨æ·æå](https://iotdb.apache.org/zh/UserGuide/Master/QuickStart/QuickStart.html)ã
+
+## ç¯å¢åå¤
+
+è¦ä½¿ç¨IoTDBï¼æ¨éè¦:
+1. Java >= 1.8 (ç®å 1.8ã11 å° 17 
å·²ç»è¢«éªè¯å¯ç¨ãè¯·ç¡®ä¿ç¯åéå¢è·¯å¾å·²æ£ç¡®è®¾ç½®)ã
+2. Maven >= 3.6 (å¦æå¸æä»æºä»£ç ç¼è¯åå®è£IoTDB)ã
+3. è®¾ç½® max open files ä¸º 65535ï¼ä»¥é¿å"too many open files"éè¯¯ã
+4. ï¼å¯éï¼ å° somaxconn è®¾ç½®ä¸º 65535 ä»¥é¿å
ç³»ç»å¨é«è´è½½æ¶åºç° "connection reset" éè¯¯ã 
+    ```
+    # Linux
+    > sudo sysctl -w net.core.somaxconn=65535
+   
+    # FreeBSD or Darwin
+    > sudo sysctl -w kern.ipc.somaxconn=65535
+    ```
+
+## å®è£
+
+IoTDBæä¾äºä¸ç§å®è£
æ¹æ³ï¼æ¨å¯ä»¥åèä»¥ä¸å»ºè®®ï¼éæ©æéåæ¨çä¸ç§:
+
+* ä»æºä»£ç å®è£ãå¦æéè¦èªå·±ä¿®æ¹ä»£ç 
ï¼å¯ä»¥ä½¿ç¨æ¤æ¹æ³ã
+
+* ä»äºè¿å¶æä»¶å®è£
ãæ¨èçæ¹æ³æ¯ä»å®æ¹ç½ç«ä¸è½½äºè¿å¶æä»¶ï¼æ¨å°è·å¾ä¸ä¸ªå¼ç®±å³ç¨çäºè¿å¶åå¸å
ã
+
+* ä½¿ç¨Docker: 
dockerfileçè·¯å¾æ¯https://github.com/apache/iotdb/tree/master/docker/src/main
+
+å¨è¿ç¯ãå¿«éå¥é¨ãä¸ï¼æä»¬ç®è¦ä»ç»å¦ä½ä½¿ç¨æºä»£ç å®è£
IoTDBãå¦éè¿ä¸æ¥èµæï¼è¯·åé
å®ç½[ç¨æ·æå](https://iotdb.apache.org/zh/UserGuide/Master/QuickStart/QuickStart.html)ã
+
+## ä»æºç æå»º
+
+### å³äºåå¤Thriftç¼è¯å¨
+
+å¦ææ¨ä½¿ç¨Windowsï¼è¯·è·³è¿æ¤æ®µã
+
+æä»¬ä½¿ç¨Thriftä½ä¸ºRPCæ¨¡åæ¥æä¾å®¢æ·ç«¯-æå¡å¨é´çéä¿¡ååè®®æ¯æï¼å
 æ¤å¨ç¼è¯é¶æ®µæä»¬éè¦ä½¿ç¨Thrift 0.13.0
+ï¼ææ´é«ï¼ç¼è¯å¨çæå¯¹åºçJavaä»£ç ã 
Thriftåªæä¾äºWindowsä¸çäºè¿å¶ç¼è¯å¨ï¼Unixä¸éè¦éè¿æºç 
èªè¡ç¼è¯ã
+
+å¦æä½ æå®è£æéï¼å¯ä»¥éè¿`apt install`, `yum install`, `brew 
install`æ¥å®è£thriftç¼è¯å¨ï¼ç¶åå¨ä¸é¢çç¼è¯å½ä»¤ä¸
+é½æ·»å 
å¦ä¸åæ°å³å¯ï¼`-Dthrift.download-url=http://apache.org/licenses/LICENSE-2.0.txt
 -Dthrift.exec.absolute.path=<ä½ çthriftå¯æ§è¡æä»¶è·¯å¾>`ã
+
+
+åæ¶æä»¬é¢åç¼è¯äºä¸ä¸ªThriftç¼è¯å¨ï¼å¹¶å°å¶ä¸ä¼ å°äºGitHub 
ï¼åå©ä¸ä¸ªMavenæä»¶ï¼å¨ç¼è¯æ¶å¯ä»¥èªå¨å°å¶ä¸è½½ã
+è¯¥é¢ç¼è¯çThriftç¼è¯å¨å¨gcc8ï¼Ubuntu, CentOS, 
MacOSä¸å¯ä»¥å·¥ä½ï¼ä½æ¯å¨æ´ä½çgcc
+çæ¬ä»¥åå¶ä»æä½ç³»ç»ä¸å°æªç¡®è®¤ã
+å¦ææ¨åç°å 
ä¸ºç½ç»é®é¢æ»æ¯æç¤ºä¸è½½ä¸å°thriftæä»¶ï¼é£ä¹æ¨éè¦æå¨ä¸è½½ï¼å¹¶å°ç¼è¯å¨æ¾ç½®å°ç®å½`{project_root}\thrift\target\tools\thrift_0.12.0_0.13.0_linux.exe`ã
+å¦ææ¨æ¾å°å¶ä»å°æ¹ï¼å°±éè¦å¨è¿è¡mavençå½ä»¤ä¸æ·»å 
ï¼`-Dthrift.download-url=http://apache.org/licenses/LICENSE-2.0.txt 
-Dthrift.exec.absolute.path=<ä½ çthriftå¯æ§è¡æä»¶è·¯å¾>`ã
+
+å¦ææ¨å¯¹Mavenè¶³å¤çæï¼æ¨ä¹å¯ä»¥ç´æ¥ä¿®æ¹æä»¬çæ 
¹pomæä»¶æ¥é¿åæ¯æ¬¡ç¼è¯é½ä½¿ç¨ä¸è¿°åæ°ã
+Thriftå®æ¹ç½åä¸ºï¼https://thrift.apache.org/
+
+ä» git åéæºä»£ç :
+
+```
+git clone https://github.com/apache/iotdb.git
+```
+
+é»è®¤çä¸»åæ¯æ¯masteråæ¯ï¼å¦æä½ 
æ³ä½¿ç¨æä¸ªåå¸çæ¬x.x.xï¼è¯·åæ¢ tag:
+
+```
+git checkout vx.x.x
+```
+
+æèåæ¢å¤§çæ¬æå¨åæ¯ï¼å¦ 1.0 çæ¬çåæ¯ä¸º rel/1.0
+
+```
+git checkout rel/x.x
+```
+
+### æºç ç¼è¯ IoTDB
+
+å¨ iotdb æ ¹ç®å½ä¸æ§è¡:
+
+```
+> mvn clean package -pl distribution -am -DskipTests
+```
+
+ç¼è¯å®æå, IoTDB äºè¿å¶åå°çæå¨: "distribution/target".
+
+### åªç¼è¯ cli
+
+å¨ iotdb/iotdb-client ç®å½ä¸æ§è¡:
+
+```
+> mvn clean package -pl cli -am -DskipTests
+```
+
+ç¼è¯å®æå, IoTDB cli å°çæå¨ "cli/target".
+
+### ç¼è¯å¶ä»æ¨¡å
+
+éè¿æ·»å  `-P compile-cpp` å¯ä»¥è¿è¡c++å®¢æ·ç«¯APIçç¼è¯ã
+
+**æ³¨æï¼"`thrift/target/generated-sources/thrift`"ï¼ 
"`thrift-sync/target/generated-sources/thrift`"ï¼"`thrift-cluster/target/generated-sources/thrift`"ï¼"`thrift-influxdb/target/generated-sources/thrift`"
 å  "`antlr/target/generated-sources/antlr4`" ç®å½éè¦æ·»å å°æºä»£ç æ 
¹ä¸ï¼ä»¥åå¨ IDE ä¸äº§çç¼è¯éè¯¯ã**
+
+**IDEAçæä½æ¹æ³ï¼å¨ä¸è¿°mavenå½ä»¤ç¼è¯å¥½åï¼å³é®é¡¹ç®åç§°ï¼éæ©"`Maven->Reload
 project`"ï¼å³å¯ã**
+
+### éç½®
+
+éç½®æä»¶å¨"conf"æä»¶å¤¹ä¸
+* ç¯å¢éç½®æ¨¡å(`datanode-env.bat`, `datanode-env.sh`),
+* ç³»ç»éç½®æ¨¡å(`iotdb-datanode.properties`)
+* æ¥å¿éç½®æ¨¡å(`logback.xml`)ã
+
+æå³è¯¦ç»ä¿¡æ¯ï¼è¯·åè§[é
ç½®åæ°](https://iotdb.apache.org/zh/UserGuide/Master/Reference/DataNode-Config-Manual.html)ã
+
+## å¼å§
+
+æ¨å¯ä»¥éè¿ä»¥ä¸æ¥éª¤æ¥æµè¯å®è£
ï¼å¦ææ§è¡åæ²¡æè¿åéè¯¯ï¼å®è£å°±å®æäºã
+
+### å¯å¨ IoTDB
+
+å¯ä»¥éè¿è¿è¡ sbin æä»¶å¤¹ä¸ç start-standalone èæ¬å¯å¨ 1C1D 
IoTDBã
+
+```
+# Unix/OS X
+> sbin/start-standalone.sh
+
+# Windows
+> sbin\start-standalone.bat
+```
+
+### ä½¿ç¨ IoTDB
+
+#### ä½¿ç¨ Cli å½ä»¤è¡
+
+IoTDBæä¾äºä¸æå¡å¨äº¤äºçä¸åæ¹å¼ï¼è¿éæä»¬å°ä»ç»ä½¿ç¨ 
Cli å·¥å·æå¥åæ¥è¯¢æ°æ®çåºæ¬æ¥éª¤ã
+
+å®è£ IoTDB åï¼æä¸ä¸ªé»è®¤çç¨æ·`root`ï¼å®çé»è®¤å¯ç 
ä¹æ¯`root`ãç¨æ·å¯ä»¥ä½¿ç¨è¿ä¸ª
+é»è®¤ç¨æ·ç»å½ Cli å¹¶ä½¿ç¨ IoTDBãCli çå¯å¨èæ¬æ¯ sbin 
æä»¶å¤¹ä¸ç start-cli èæ¬ã
+å¨æ§è¡èæ¬æ¶ï¼ç¨æ·åºè¯¥æå® IPï¼ç«¯å£ï¼USER_NAME å å¯ç 
ãé»è®¤åæ°ä¸º`-h 127.0.0.1 -p 6667 -u root -pw root`ã
+
+
+ä¸é¢æ¯å¯å¨ Cli çå½ä»¤:
+
+```
+# Unix/OS X
+> sbin/start-cli.sh -h 127.0.0.1 -p 6667 -u root -pw root
+
+# Windows
+> sbin\start-cli.bat -h 127.0.0.1 -p 6667 -u root -pw root
+```
+
+å½ä»¤è¡å®¢æ·ç«¯æ¯äº¤äºå¼çï¼æä»¥å¦æä¸åå°±ç»ªï¼æ¨åºè¯¥çå°æ¬¢è¿æ
 å¿åå£°æ:
+
+```
+ _____       _________  ______   ______
+|_   _|     |  _   _  ||_   _ `.|_   _ \
+  | |   .--.|_/ | | \_|  | | `. \ | |_) |
+  | | / .'`\ \  | |      | |  | | |  __'.
+ _| |_| \__. | _| |_    _| |_.' /_| |__) |
+|_____|'.__.' |_____|  |______.'|_______/  version x.x.x
+
+
+IoTDB> login successfully
+IoTDB>
+```
+
+#### åºæ¬ç IoTDB å½ä»¤
+
+ç°å¨ï¼è®©æä»¬ä»ç»åå»º timeseriesãæå
¥æ°æ®åæ¥è¯¢æ°æ®çæ¹æ³ã
+
+
+IoTDBä¸çæ°æ®ç»ç»ä¸º timeseriesãæ¯ä¸ª timeseries å
å«å¤ä¸ª`æ°æ®-æ¶é´`å¯¹ï¼ç±ä¸ä¸ª database æ¥æã
+å¨å®ä¹ timeseries ä¹åï¼æä»¬åºè¯¥åä½¿ç¨ CREATE DATABASE 
æ¥åå»ºä¸ä¸ªæ°æ®åºï¼ä¸é¢æ¯ä¸ä¸ªä¾å:
+
+```
+IoTDB> CREATE DATABASE root.ln
+```
+
+æä»¬ä¹å¯ä»¥ä½¿ç¨`SHOW DATABASES`æ¥æ£æ¥å·²åå»ºçæ°æ®åº:
+
+```
+IoTDB> SHOW DATABASES
++--------+
+|Database|
++--------+
+| root.ln|
++--------+
+Total line number = 1
+```
+
+å¨è®¾ç½® database ä¹åï¼æä»¬å¯ä»¥ä½¿ç¨CREATE 
TIMESERIESæ¥åå»ºä¸ä¸ªæ°çTIMESERIESã
+å¨åå»º timeseries æ¶ï¼æä»¬åºè¯¥å®ä¹å®çæ°æ®ç±»ååç¼ç 
æ¹æ¡ãè¿éæä»¬åå»ºä¸¤ä¸ª timeseries:
+
+
+```
+IoTDB> CREATE TIMESERIES root.ln.wf01.wt01.status WITH DATATYPE=BOOLEAN, 
ENCODING=PLAIN
+IoTDB> CREATE TIMESERIES root.ln.wf01.wt01.temperature WITH DATATYPE=FLOAT, 
ENCODING=RLE
+```
+
+ä¸ºäºæ¥è¯¢ç¹å®çtimeseriesï¼æä»¬å¯ä»¥ä½¿ç¨ `SHOW TIMESERIES <Path>`. 
<Path> è¡¨ç¤ºè¢«æ¥è¯¢ç timeseries çè·¯å¾. é»è®¤å¼æ¯`null`, 
è¡¨ç¤ºæ¥è¯¢ç³»ç»ä¸ææç timeseries (å`SHOW TIMESERIES root`). 
+ä»¥ä¸æ¯ä¸äºç¤ºä¾:
+
+1. æ¥è¯¢ç³»ç»ä¸ææ timeseries:
+
+```
+IoTDB> SHOW TIMESERIES
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|                   
timeseries|alias|database|dataType|encoding|compression|tags|attributes|
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|root.ln.wf01.wt01.temperature| null|      root.ln|   FLOAT|     RLE|     
SNAPPY|null|      null|
+|     root.ln.wf01.wt01.status| null|      root.ln| BOOLEAN|   PLAIN|     
SNAPPY|null|      null|
++-----------------------------+-----+-------------+--------+--------+-----------+----+----------+
+Total line number = 2
+```
+
+2. æ¥è¯¢æå®ç timeseries(root.ln.wf01.wt01.status):
+
+```
+IoTDB> SHOW TIMESERIES root.ln.wf01.wt01.status
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|              
timeseries|alias|database|dataType|encoding|compression|tags|attributes|
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+|root.ln.wf01.wt01.status| null|      root.ln| BOOLEAN|   PLAIN|     
SNAPPY|null|      null|
++------------------------+-----+-------------+--------+--------+-----------+----+----------+
+Total line number = 1
+```
+
+æå¥ timeseries æ°æ®æ¯IoTDBçä¸ä¸ªåºæ¬æä½ï¼ä½ 
å¯ä»¥ä½¿ç¨`INSERT` å½ä»¤æ¥å®æè¿ä¸ªæä½ã
+å¨æå¥ä¹åï¼æ¨åºè¯¥æå®æ¶é´æ³ååç¼è·¯å¾å:
+
+```
+IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status) values(100,true);
+IoTDB> INSERT INTO root.ln.wf01.wt01(timestamp,status,temperature) 
values(200,false,20.71)
+```
+
+ä½ åææå¥çæ°æ®ä¼æ¾ç¤ºå¦ä¸:
+
+```
+IoTDB> SELECT status FROM root.ln.wf01.wt01
++-----------------------------+------------------------+
+|                         Time|root.ln.wf01.wt01.status|
++-----------------------------+------------------------+
+|1970-01-01T08:00:00.100+08:00|                    true|
+|1970-01-01T08:00:00.200+08:00|                   false|
++-----------------------------+------------------------+
+Total line number = 2
+```
+
+æ¨è¿å¯ä»¥ä½¿ç¨ä¸æ¡SQLè¯å¥æ¥è¯¢å¤ä¸ª timeseries æ°æ®:
+
+```
+IoTDB> SELECT * FROM root.ln.wf01.wt01
++-----------------------------+-----------------------------+------------------------+
+|                         
Time|root.ln.wf01.wt01.temperature|root.ln.wf01.wt01.status|
++-----------------------------+-----------------------------+------------------------+
+|1970-01-01T08:00:00.100+08:00|                         null|                  
  true|
+|1970-01-01T08:00:00.200+08:00|                        20.71|                  
 false|
++-----------------------------+-----------------------------+------------------------+
+Total line number = 2
+```
+
+å¦æéè¦ä¿®æ¹ Cli ä¸çæ¶åºï¼æ¨å¯ä»¥ä½¿ç¨ä»¥ä¸è¯å¥:
+
+```
+IoTDB> SET time_zone=+00:00
+Time zone has set to +00:00
+IoTDB> SHOW time_zone
+Current time zone: Z
+```
+
+ä¹åæ¥è¯¢ç»æå°ä¼ä»¥æ´æ°åçæ°æ¶åºæ¾ç¤º:
+
+```
+IoTDB> SELECT * FROM root.ln.wf01.wt01
++------------------------+-----------------------------+------------------------+
+|                    
Time|root.ln.wf01.wt01.temperature|root.ln.wf01.wt01.status|
++------------------------+-----------------------------+------------------------+
+|1970-01-01T00:00:00.100Z|                         null|                    
true|
+|1970-01-01T00:00:00.200Z|                        20.71|                   
false|
++------------------------+-----------------------------+------------------------+
+Total line number = 2
+```
+
+ä½ å¯ä»¥ä½¿ç¨å¦ä¸å½ä»¤éåº:
+
+```
+IoTDB> quit
+or
+IoTDB> exit
+```
+
+æå³IoTDB 
SQLæ¯æçå½ä»¤çæ´å¤ä¿¡æ¯ï¼è¯·åè§[ç¨æ·æå](https://iotdb.apache.org/zh/UserGuide/Master/QuickStart/QuickStart.html)ã
+
+### åæ¢ IoTDB
+
+server å¯ä»¥ä½¿ç¨ "ctrl-C" æèæ§è¡ä¸é¢çèæ¬:
+
+```
+# Unix/OS X
+> sbin/stop-standalone.sh
+
+# Windows
+> sbin\stop-standalone.bat
+```
+
+# å¯¼å¥å¯¼åºCSVå·¥å·
+
+æ¥ç [å¯¼å¥å¯¼åºCSVå·¥å
·](https://iotdb.apache.org/zh/UserGuide/Master/Maintenance-Tools/CSV-Tool.html)
+
+# å¸¸è§ç¼è¯éè¯¯
+æ¥ç 
[å¸¸è§ç¼è¯éè¯¯](https://iotdb.apache.org/zh/Development/ContributeGuide.html#%E5%B8%B8%E8%A7%81%E7%BC%96%E8%AF%91%E9%94%99%E8%AF%AF)
+
+# èç³»æä»¬
+### QQç¾¤
+
+* Apache IoTDB äº¤æµç¾¤ï¼659990460
+
+### Wechat Group
+
+* æ·»å å¥½å `tietouqiao` æè `liutaohua001`ï¼æä»¬ä¼éè¯·æ¨è¿ç¾¤
+
+### Slack
+
+* 
https://join.slack.com/t/apacheiotdb/shared_invite/zt-qvso1nj8-7715TpySZtZqmyG5qXQwpg
+
+è·åæ´å¤åå®¹ï¼è¯·æ¥ç [å å
¥ç¤¾åº](https://github.com/apache/iotdb/issues/1995)

svn commit: r66378 [1/3] - /release/iotdb/1.3.0/

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