(window.webpackJsonp=window.webpackJsonp||[]).push([[494],{1064:function(e,s,t){"use strict";t.r(s);var a=t(70),n=Object(a.a)({},(function(){var e=this,s=e.$createElement,t=e._self._c||s;return t("ContentSlotsDistributor",{attrs:{"slot-key":e.$parent.slotKey}},[t("h1",{attrs:{id:"tsfile的hive连接器"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#tsfile的hive连接器"}},[e._v("#")]),e._v(" TsFile的Hive连接器")]),e._v(" "),t("h2",{attrs:{id:"概要"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#概要"}},[e._v("#")]),e._v(" 概要")]),e._v(" "),t("ul",[t("li",[e._v("TsFile的Hive连接器使用手册\n"),t("ul",[t("li",[e._v("什么是TsFile的Hive连接器")]),e._v(" "),t("li",[e._v("系统环境要求")]),e._v(" "),t("li",[e._v("数据类型对应关系")]),e._v(" "),t("li",[e._v("为Hive添加依赖jar包")]),e._v(" "),t("li",[e._v("创建Tsfile-backed的Hive表")]),e._v(" "),t("li",[e._v("从Tsfile-backed的Hive表中查询\n"),t("ul",[t("li",[e._v("选择查询语句示例")]),e._v(" "),t("li",[e._v("聚合查询语句示例")])])]),e._v(" "),t("li",[e._v("后续工作")])])])]),e._v(" 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"),t("code",[e._v("3.2.1")])]),e._v(" "),t("td",[t("code",[e._v("2.3.6")]),e._v(" or "),t("code",[e._v("3.1.2")])]),e._v(" "),t("td",[t("code",[e._v("1.8")])]),e._v(" "),t("td",[t("code",[e._v("0.11.1")])])])])]),e._v(" "),t("blockquote",[t("p",[e._v("注意：关于如何下载和使用Tsfile, 请参考以下链接: "),t("a",{attrs:{href:"https://github.com/apache/iotdb/tree/master/tsfile",target:"_blank",rel:"noopener noreferrer"}},[e._v("https://github.com/apache/iotdb/tree/master/tsfile"),t("OutboundLink")],1),e._v("。")])]),e._v(" "),t("h2",{attrs:{id:"数据类型对应关系"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#数据类型对应关系"}},[e._v("#")]),e._v(" 数据类型对应关系")]),e._v(" "),t("table",[t("thead",[t("tr",[t("th",[e._v("TsFile 数据类型")]),e._v(" "),t("th",[e._v("Hive 数据类型")])])]),e._v(" "),t("tbody",[t("tr",[t("td",[e._v("BOOLEAN")]),e._v(" "),t("td",[e._v("Boolean")])]),e._v(" "),t("tr",[t("td",[e._v("INT32")]),e._v(" "),t("td",[e._v("INT")])]),e._v(" "),t("tr",[t("td",[e._v("INT64")]),e._v(" "),t("td",[e._v("BIGINT")])]),e._v(" "),t("tr",[t("td",[e._v("FLOAT")]),e._v(" "),t("td",[e._v("Float")])]),e._v(" "),t("tr",[t("td",[e._v("DOUBLE")]),e._v(" "),t("td",[e._v("Double")])]),e._v(" "),t("tr",[t("td",[e._v("TEXT")]),e._v(" "),t("td",[e._v("STRING")])])])]),e._v(" "),t("h2",{attrs:{id:"为hive添加依赖jar包"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#为hive添加依赖jar包"}},[e._v("#")]),e._v(" 为Hive添加依赖jar包")]),e._v(" "),t("p",[e._v("为了在Hive中使用Tsfile的hive连接器，我们需要把hive连接器的jar导入进hive。")]),e._v(" "),t("p",[e._v("从 "),t("a",{attrs:{href:"https://github.com/apache/iotdb",target:"_blank",rel:"noopener noreferrer"}},[e._v("https://github.com/apache/iotdb"),t("OutboundLink")],1),e._v("下载完iotdb后, 你可以使用 "),t("code",[e._v("mvn clean package -pl hive-connector -am -Dmaven.test.skip=true")]),e._v("命令得到一个 "),t("code",[e._v("hive-connector-X.X.X-SNAPSHOT-jar-with-dependencies.jar")]),e._v("。")]),e._v(" "),t("p",[e._v("然后在hive的命令行中，使用"),t("code",[e._v("add jar XXX")]),e._v("命令添加依赖。例如:")]),e._v(" 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INPUTFORMAT 'org.apache.iotdb.hive.TSFHiveInputFormat'\n  OUTPUTFORMAT 'org.apache.iotdb.hive.TSFHiveOutputFormat'\nLOCATION '/data/data/sequence/root.baic2.WWS.leftfrontdoor/'\nTBLPROPERTIES ('device_id'='root.baic2.WWS.leftfrontdoor.plc1');\n")])]),e._v(" 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deserializer\nsensor_1            \tbigint              \tfrom deserializer\nTime taken: 0.053 seconds, Fetched: 2 row(s)\n")])]),e._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[e._v("1")]),t("br"),t("span",{staticClass:"line-number"},[e._v("2")]),t("br"),t("span",{staticClass:"line-number"},[e._v("3")]),t("br"),t("span",{staticClass:"line-number"},[e._v("4")]),t("br"),t("span",{staticClass:"line-number"},[e._v("5")]),t("br")])]),t("p",[e._v("到目前为止, Tsfile-backed的表已经可以像hive中其他表一样被操作了。")]),e._v(" "),t("h2",{attrs:{id:"从tsfile-backed的hive表中查询"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#从tsfile-backed的hive表中查询"}},[e._v("#")]),e._v(" 从Tsfile-backed的Hive表中查询")]),e._v(" "),t("p",[e._v("在做任何查询之前，我们需要通过如下命令，在hive中设置"),t("code",[e._v("hive.input.format")]),e._v("：")]),e._v(" "),t("div",{staticClass:"language- line-numbers-mode"},[t("pre",{pre:!0,attrs:{class:"language-text"}},[t("code",[e._v("hive> set 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Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.\nQuery ID = jackietien_20191016202416_d1e3e233-d367-4453-b39a-2aac9327a3b6\nTotal jobs = 1\nLaunching Job 1 out of 1\nNumber of reduce tasks determined at compile time: 1\nIn order to change the average load for a reducer (in bytes):\n  set hive.exec.reducers.bytes.per.reducer=<number>\nIn order to limit the maximum number of reducers:\n  set hive.exec.reducers.max=<number>\nIn order to set a constant number of reducers:\n  set mapreduce.job.reduces=<number>\nJob running in-process (local Hadoop)\n2019-10-16 20:24:18,305 Stage-1 map = 0%,  reduce = 0%\n2019-10-16 20:24:27,443 Stage-1 map = 100%,  reduce = 100%\nEnded Job = job_local867757288_0002\nMapReduce Jobs Launched:\nStage-Stage-1:  HDFS Read: 0 HDFS Write: 0 SUCCESS\nTotal MapReduce CPU Time Spent: 0 msec\nOK\n1000000\nTime taken: 11.334 seconds, Fetched: 1 row(s)\n")])]),e._v(" "),t("div",{staticClass:"line-numbers-wrapper"},[t("span",{staticClass:"line-number"},[e._v("1")]),t("br"),t("span",{staticClass:"line-number"},[e._v("2")]),t("br"),t("span",{staticClass:"line-number"},[e._v("3")]),t("br"),t("span",{staticClass:"line-number"},[e._v("4")]),t("br"),t("span",{staticClass:"line-number"},[e._v("5")]),t("br"),t("span",{staticClass:"line-number"},[e._v("6")]),t("br"),t("span",{staticClass:"line-number"},[e._v("7")]),t("br"),t("span",{staticClass:"line-number"},[e._v("8")]),t("br"),t("span",{staticClass:"line-number"},[e._v("9")]),t("br"),t("span",{staticClass:"line-number"},[e._v("10")]),t("br"),t("span",{staticClass:"line-number"},[e._v("11")]),t("br"),t("span",{staticClass:"line-number"},[e._v("12")]),t("br"),t("span",{staticClass:"line-number"},[e._v("13")]),t("br"),t("span",{staticClass:"line-number"},[e._v("14")]),t("br"),t("span",{staticClass:"line-number"},[e._v("15")]),t("br"),t("span",{staticClass:"line-number"},[e._v("16")]),t("br"),t("span",{staticClass:"line-number"},[e._v("17")]),t("br"),t("span",{staticClass:"line-number"},[e._v("18")]),t("br"),t("span",{staticClass:"line-number"},[e._v("19")]),t("br"),t("span",{staticClass:"line-number"},[e._v("20")]),t("br"),t("span",{staticClass:"line-number"},[e._v("21")]),t("br"),t("span",{staticClass:"line-number"},[e._v("22")]),t("br")])]),t("h2",{attrs:{id:"后续工作"}},[t("a",{staticClass:"header-anchor",attrs:{href:"#后续工作"}},[e._v("#")]),e._v(" 后续工作")]),e._v(" "),t("p",[e._v("我们现在仅支持查询操作，写操作的支持还在开发中...")])])}),[],!1,null,null,null);s.default=n.exports}}]);