(window.webpackJsonp=window.webpackJsonp||[]).push([[160],{558:function(t,e,i){"use strict";i.r(e);var a=i(29),l=Object(a.a)({},(function(){var t=this,e=t._self._c;return e("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[e("h1",{attrs:{id:"config-manual"}},[e("a",{staticClass:"header-anchor",attrs:{href:"#config-manual"}},[t._v("#")]),t._v(" Config Manual")]),t._v(" "),e("p",[t._v("Before starting to use IoTDB, you need to config the configuration files first. For your convenience, we have already set the default config in the files.")]),t._v(" "),e("p",[t._v("In total, we provide users three kinds of configurations module:")]),t._v(" "),e("ul",[e("li",[e("p",[t._v("environment configuration file ("),e("code",[t._v("iotdb-env.bat")]),t._v(", "),e("code",[t._v("iotdb-env.sh")]),t._v("). The default configuration file for the environment configuration item. Users can configure the relevant system configuration items of JAVA-JVM in the file.")])]),t._v(" "),e("li",[e("p",[t._v("system configuration file ("),e("code",[t._v("iotdb-engine.properties")]),t._v(").")]),t._v(" "),e("ul",[e("li",[e("code",[t._v("iotdb-engine.properties")]),t._v(": The default configuration file for the IoTDB engine layer configuration item. Users can configure the IoTDB engine related parameters in the file, such as JDBC service listening port ("),e("code",[t._v("rpc_port")]),t._v("), unsequence data storage directory ("),e("code",[t._v("unsequence_data_dir")]),t._v("), etc. What's more, Users can configure the information about the TsFile, such as the data size written to the disk per time("),e("code",[t._v("group_size_in_byte")]),t._v(").")])])]),t._v(" "),e("li",[e("p",[t._v("log configuration file ("),e("code",[t._v("logback.xml")]),t._v(")")])])]),t._v(" "),e("p",[t._v("The configuration files of the three configuration items are located in the IoTDB installation directory: "),e("code",[t._v("$IOTDB_HOME/conf")]),t._v(" folder.")]),t._v(" "),e("h2",{attrs:{id:"hot-modification-configuration"}},[e("a",{staticClass:"header-anchor",attrs:{href:"#hot-modification-configuration"}},[t._v("#")]),t._v(" Hot Modification Configuration")]),t._v(" "),e("p",[t._v("For the convenience of users, IoTDB server provides users with hot modification function, that is, modifying some configuration parameters in "),e("code",[t._v("iotdb engine. Properties")]),t._v(" during the system operation and applying them to the system immediately.\nIn the parameters described below, these parameters whose way of "),e("code",[t._v("Effective")]),t._v(" is "),e("code",[t._v("trigger")]),t._v(" support hot modification.")]),t._v(" "),e("p",[t._v("Trigger way: The client sends the command "),e("code",[t._v("load configuration")]),t._v(" to the IoTDB server. See Chapter 4 for the usage of the client.")]),t._v(" "),e("h2",{attrs:{id:"iotdb-environment-configuration-file"}},[e("a",{staticClass:"header-anchor",attrs:{href:"#iotdb-environment-configuration-file"}},[t._v("#")]),t._v(" IoTDB Environment Configuration File")]),t._v(" "),e("p",[t._v("The environment configuration file is mainly used to configure the Java environment related parameters when IoTDB Server is running, such as JVM related configuration. This part of the configuration is passed to the JVM when the IoTDB Server starts. 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"),e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Default")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("1048576")])]),t._v(" "),e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Effective")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("Trigger")])])])]),t._v(" "),e("ul",[e("li",[t._v("max_degree_of_index_node")])]),t._v(" "),e("table",[e("thead",[e("tr",[e("th",{staticStyle:{"text-align":"center"}},[t._v("Name")]),t._v(" "),e("th",{staticStyle:{"text-align":"left"}},[t._v("max_degree_of_index_node")])])]),t._v(" "),e("tbody",[e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Description")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("The maximum degree of the metadata index tree (that is, the max number of each node's children)")])]),t._v(" "),e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Type")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("Int32")])]),t._v(" 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Note: The 32-bit floating point number has a decimal precision of 7 bits, and the 64-bit floating point number has a decimal precision of 15 bits. If the setting is out of the range, it will have no practical significance.")])]),t._v(" "),e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Effective")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("Trigger")])])])]),t._v(" "),e("ul",[e("li",[t._v("bloomFilterErrorRate")])]),t._v(" "),e("table",[e("thead",[e("tr",[e("th",{staticStyle:{"text-align":"center"}},[t._v("Name")]),t._v(" "),e("th",{staticStyle:{"text-align":"left"}},[t._v("bloomFilterErrorRate")])])]),t._v(" "),e("tbody",[e("tr",[e("td",{staticStyle:{"text-align":"center"}},[t._v("Description")]),t._v(" "),e("td",{staticStyle:{"text-align":"left"}},[t._v("The false positive rate of bloom filter in each TsFile. Bloom filter checks whether a given time series is in the tsfile before loading metadata. 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Fill in the configuration class with the full class name of the implemented class (package name plus class name, UserDfineStrategyPackage);"),e("br"),t._v("3. 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