(window.webpackJsonp=window.webpackJsonp||[]).push([[301],{695:function(t,s,a){"use strict";a.r(s);var n=a(29),e=Object(n.a)({},(function(){var t=this,s=t._self._c;return s("ContentSlotsDistributor",{attrs:{"slot-key":t.$parent.slotKey}},[s("h2",{attrs:{id:"spark-iotdb"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#spark-iotdb"}},[t._v("#")]),t._v(" Spark-IoTDB")]),t._v(" "),s("h3",{attrs:{id:"version"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#version"}},[t._v("#")]),t._v(" Version")]),t._v(" "),s("p",[t._v("The versions required for Spark and Java are as follow:")]),t._v(" "),s("table",[s("thead",[s("tr",[s("th",{staticStyle:{"text-align":"center"}},[t._v("Spark Version")]),t._v(" "),s("th",{staticStyle:{"text-align":"center"}},[t._v("Scala Version")]),t._v(" "),s("th",{staticStyle:{"text-align":"center"}},[t._v("Java Version")]),t._v(" "),s("th",{staticStyle:{"text-align":"center"}},[t._v("TsFile")])])]),t._v(" "),s("tbody",[s("tr",[s("td",{staticStyle:{"text-align":"center"}},[s("code",[t._v("2.4.0-3.2.0")])]),t._v(" "),s("td",{staticStyle:{"text-align":"center"}},[s("code",[t._v("2.12")])]),t._v(" "),s("td",{staticStyle:{"text-align":"center"}},[s("code",[t._v("1.8")])]),t._v(" "),s("td",{staticStyle:{"text-align":"center"}},[s("code",[t._v("0.13.0")])])])])]),t._v(" "),s("h3",{attrs:{id:"notice"}},[s("a",{staticClass:"header-anchor",attrs:{href:"#notice"}},[t._v("#")]),t._v(" Notice")]),t._v(" "),s("ol",[s("li",[s("code",[t._v("Spark IoTDB Connector")]),t._v(" only supports Spark "),s("code",[t._v("2.4.5")]),t._v(" to "),s("code",[t._v("3.2.0")]),t._v(" with "),s("code",[t._v("Scala 2.12")]),t._v(".\nIf you need to support other versions, you can modify the Scala version of the POM file in the module "),s("code",[t._v("spark-iotdb-connector")]),t._v(" in the source code and then recompile it.")]),t._v(" "),s("li",[t._v("There is a conflict of thrift version between IoTDB and Spark.\nTherefore, if you want to debug in spark-shell, you need to execute "),s("code",[t._v("rm -f $SPARK_HOME/jars/libthrift*")]),t._v(" and "),s("code",[t._v("cp $IOTDB_HOME/lib/libthrift* $SPARK_HOME/jars/")]),t._v(" to resolve it.\nOtherwise, you can only debug the code in IDE. 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Notes")]),t._v(" "),s("ol",[s("li",[t._v("You can directly write data to IoTDB whatever the dataframe contains a wide table or a narrow table.")]),t._v(" "),s("li",[t._v("The parameter "),s("code",[t._v("numPartition")]),t._v(" is used to set the number of partitions. The dataframe that you want to save will be repartition based on this parameter before  writing data. Each partition will open a session to write data to increase the number of concurrent requests.")])])])}),[],!1,null,null,null);s.default=e.exports}}]);