9

我正在尝试计算 Spark SQL 上的 Jaccard 索引。我的表上Hive有以下数据：

hive> select * from test_1;

1   ["rock","pop"]
2   ["metal","rock"]

表 DDL：

create table test_1
(id int, val array<string>);

我正在使用UDF来自Brickhouse的。从 开始spark-shell，我可以执行以下命令来创建临时函数。

val hiveContext = new org.apache.spark.sql.hive.HiveContext(sc)
hiveContext.hql("CREATE TEMPORARY FUNCTION jaccard_similarity AS 'brickhouse.udf.sketch.SetSimilarityUDF'")

我还将.jar文件添加到CLASSPATHfor spark-shell(in compute-classpath.sh)。

当我列出函数时，我可以看到我创建的新函数。

hiveContext.hql("show functions").collect().foreach(println)

接下来，我使用该jaccard_similarity函数计算val数组的 Jaccard 索引。

hiveContext.hql("select jaccard_similarity(a.val, b.val) from test_1 a join test_1 b")

我收到以下错误：

14/07/31 15:39:56 INFO ParseDriver: Parsing command: select jaccard_similarity(a.val, b.val) from test_1 a join test_1 b
14/07/31 15:39:56 INFO ParseDriver: Parse Completed
14/07/31 15:39:56 INFO Analyzer: Max iterations (2) reached for batch MultiInstanceRelations
14/07/31 15:39:56 INFO Analyzer: Max iterations (2) reached for batch CaseInsensitiveAttributeReferences
14/07/31 15:39:56 INFO HiveMetaStore: 0: get_table : db=default tbl=test_1
14/07/31 15:39:56 INFO audit: ugi=username  ip=unknown-ip-addr  cmd=get_table : db=default tbl=test_1   
14/07/31 15:39:56 INFO HiveMetaStore: 0: get_table : db=default tbl=test_1
14/07/31 15:39:56 INFO audit: ugi=username  ip=unknown-ip-addr  cmd=get_table : db=default tbl=test_1   
scala.MatchError: ArrayType(StringType) (of class org.apache.spark.sql.catalyst.types.ArrayType)
    at org.apache.spark.sql.hive.HiveInspectors$typeInfoConversions.toTypeInfo(hiveUdfs.scala:382)
    at org.apache.spark.sql.hive.HiveFunctionRegistry$$anonfun$2.apply(hiveUdfs.scala:52)
    at org.apache.spark.sql.hive.HiveFunctionRegistry$$anonfun$2.apply(hiveUdfs.scala:52)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.immutable.List.foreach(List.scala:318)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    at org.apache.spark.sql.hive.HiveFunctionRegistry$.lookupFunction(hiveUdfs.scala:52)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5$$anonfun$applyOrElse$3.applyOrElse(Analyzer.scala:131)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5$$anonfun$applyOrElse$3.applyOrElse(Analyzer.scala:129)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:165)
    at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$4.apply(TreeNode.scala:183)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
    at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
    at scala.collection.AbstractIterator.to(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
    at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
    at scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformChildrenDown(TreeNode.scala:212)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:168)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.org$apache$spark$sql$catalyst$plans$QueryPlan$$transformExpressionDown$1(QueryPlan.scala:52)
    at org.apache.spark.sql.catalyst.plans.QueryPlan$$anonfun$1$$anonfun$apply$1.apply(QueryPlan.scala:66)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    at org.apache.spark.sql.catalyst.plans.QueryPlan$$anonfun$1.apply(QueryPlan.scala:65)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
    at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
    at scala.collection.AbstractIterator.to(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
    at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
    at scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.transformExpressionsDown(QueryPlan.scala:70)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.transformExpressions(QueryPlan.scala:41)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5.applyOrElse(Analyzer.scala:129)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5.applyOrElse(Analyzer.scala:127)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:165)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transform(TreeNode.scala:156)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$.apply(Analyzer.scala:127)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$.apply(Analyzer.scala:126)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:62)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:60)
    at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:111)
    at scala.collection.immutable.List.foldLeft(List.scala:84)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:60)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:52)
    at scala.collection.immutable.List.foreach(List.scala:318)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor.apply(RuleExecutor.scala:52)
    at org.apache.spark.sql.SQLContext$QueryExecution.analyzed$lzycompute(SQLContext.scala:313)
    at org.apache.spark.sql.SQLContext$QueryExecution.analyzed(SQLContext.scala:313)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.optimizedPlan$lzycompute(HiveContext.scala:248)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.optimizedPlan(HiveContext.scala:247)
    at org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan$lzycompute(SQLContext.scala:316)
    at org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan(SQLContext.scala:316)
    at org.apache.spark.sql.SQLContext$QueryExecution.executedPlan$lzycompute(SQLContext.scala:319)
    at org.apache.spark.sql.SQLContext$QueryExecution.executedPlan(SQLContext.scala:319)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.simpleString(HiveContext.scala:315)
    at org.apache.spark.sql.SchemaRDDLike$class.toString(SchemaRDDLike.scala:67)
    at org.apache.spark.sql.SchemaRDD.toString(SchemaRDD.scala:100)
    at scala.runtime.ScalaRunTime$.scala$runtime$ScalaRunTime$$inner$1(ScalaRunTime.scala:324)
    at scala.runtime.ScalaRunTime$.stringOf(ScalaRunTime.scala:329)
    at scala.runtime.ScalaRunTime$.replStringOf(ScalaRunTime.scala:337)
    at .<init>(<console>:10)
    at .<clinit>(<console>)
    at $print(<console>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:788)
    at org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1056)
    at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:614)
    at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:645)
    at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:609)
    at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:796)
    at org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:841)
    at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:753)
    at org.apache.spark.repl.SparkILoop.processLine$1(SparkILoop.scala:601)
    at org.apache.spark.repl.SparkILoop.innerLoop$1(SparkILoop.scala:608)
    at org.apache.spark.repl.SparkILoop.loop(SparkILoop.scala:611)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply$mcZ$sp(SparkILoop.scala:936)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:884)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:884)
    at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
    at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:884)
    at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:982)
    at org.apache.spark.repl.Main$.main(Main.scala:31)
    at org.apache.spark.repl.Main.main(Main.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:303)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:55)
    at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

我查看了Spark来自 GitHub 的源代码。在datatypes.scala中，有以下代码：

 protected lazy val arrayType: Parser[DataType] =
    "ArrayType" ~> "(" ~> dataType ~ "," ~ boolVal <~ ")" ^^ {
      case tpe ~ _ ~ containsNull => ArrayType(tpe, containsNull)

我找不到任何关于arraySpark SQL 不支持的参考。如果任何人都可以分享有关如何使其工作的任何指示，那就太好了。

Hive此外，该功能可以在shell 中完美运行。

更新（8 月 5 日）：

我只是从 Github 上的 Master 分支构建 Spark。错误消息包含更多信息（例如scala.MatchError: ArrayType(StringType,false)，而不是scala.MatchError: ArrayType(StringType)）

scala> hiveContext.hql("select jaccard_similarity(a.val, b.val) from test_1 a join test_1 b")
warning: there were 1 deprecation warning(s); re-run with -deprecation for details
14/08/05 13:54:53 INFO ParseDriver: Parsing command: select jaccard_similarity(a.val, b.val) from test_1 a join test_1 b
14/08/05 13:54:53 INFO ParseDriver: Parse Completed
14/08/05 13:54:53 INFO HiveMetaStore: 0: get_table : db=default tbl=test_1
14/08/05 13:54:53 INFO audit: ugi=chandrv1  ip=unknown-ip-addr  cmd=get_table : db=default tbl=test_1   
14/08/05 13:54:53 INFO HiveMetaStore: 0: get_table : db=default tbl=test_1
14/08/05 13:54:53 INFO audit: ugi=chandrv1  ip=unknown-ip-addr  cmd=get_table : db=default tbl=test_1   
scala.MatchError: ArrayType(StringType,false) (of class org.apache.spark.sql.catalyst.types.ArrayType)
    at org.apache.spark.sql.hive.HiveInspectors$typeInfoConversions.toTypeInfo(HiveInspectors.scala:216)
    at org.apache.spark.sql.hive.HiveFunctionRegistry$$anonfun$2.apply(hiveUdfs.scala:52)
    at org.apache.spark.sql.hive.HiveFunctionRegistry$$anonfun$2.apply(hiveUdfs.scala:52)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.immutable.List.foreach(List.scala:318)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    at org.apache.spark.sql.hive.HiveFunctionRegistry.lookupFunction(hiveUdfs.scala:52)
    at org.apache.spark.sql.hive.HiveContext$$anon$3.org$apache$spark$sql$catalyst$analysis$OverrideFunctionRegistry$$super$lookupFunction(HiveContext.scala:253)
    at org.apache.spark.sql.catalyst.analysis.OverrideFunctionRegistry$$anonfun$lookupFunction$2.apply(FunctionRegistry.scala:41)
    at org.apache.spark.sql.catalyst.analysis.OverrideFunctionRegistry$$anonfun$lookupFunction$2.apply(FunctionRegistry.scala:41)
    at scala.Option.getOrElse(Option.scala:120)
    at org.apache.spark.sql.catalyst.analysis.OverrideFunctionRegistry$class.lookupFunction(FunctionRegistry.scala:41)
    at org.apache.spark.sql.hive.HiveContext$$anon$3.lookupFunction(HiveContext.scala:253)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5$$anonfun$applyOrElse$3.applyOrElse(Analyzer.scala:131)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5$$anonfun$applyOrElse$3.applyOrElse(Analyzer.scala:129)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:165)
    at org.apache.spark.sql.catalyst.trees.TreeNode$$anonfun$4.apply(TreeNode.scala:183)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
    at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
    at scala.collection.AbstractIterator.to(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
    at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
    at scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformChildrenDown(TreeNode.scala:212)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:168)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.org$apache$spark$sql$catalyst$plans$QueryPlan$$transformExpressionDown$1(QueryPlan.scala:52)
    at org.apache.spark.sql.catalyst.plans.QueryPlan$$anonfun$1$$anonfun$apply$1.apply(QueryPlan.scala:66)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
    at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
    at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
    at scala.collection.AbstractTraversable.map(Traversable.scala:105)
    at org.apache.spark.sql.catalyst.plans.QueryPlan$$anonfun$1.apply(QueryPlan.scala:65)
    at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
    at scala.collection.Iterator$class.foreach(Iterator.scala:727)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
    at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:103)
    at scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:47)
    at scala.collection.TraversableOnce$class.to(TraversableOnce.scala:273)
    at scala.collection.AbstractIterator.to(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:265)
    at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1157)
    at scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:252)
    at scala.collection.AbstractIterator.toArray(Iterator.scala:1157)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.transformExpressionsDown(QueryPlan.scala:70)
    at org.apache.spark.sql.catalyst.plans.QueryPlan.transformExpressions(QueryPlan.scala:41)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5.applyOrElse(Analyzer.scala:129)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$$anonfun$apply$5.applyOrElse(Analyzer.scala:127)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transformDown(TreeNode.scala:165)
    at org.apache.spark.sql.catalyst.trees.TreeNode.transform(TreeNode.scala:156)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$.apply(Analyzer.scala:127)
    at org.apache.spark.sql.catalyst.analysis.Analyzer$ResolveFunctions$.apply(Analyzer.scala:126)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:61)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1$$anonfun$apply$2.apply(RuleExecutor.scala:59)
    at scala.collection.LinearSeqOptimized$class.foldLeft(LinearSeqOptimized.scala:111)
    at scala.collection.immutable.List.foldLeft(List.scala:84)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:59)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor$$anonfun$apply$1.apply(RuleExecutor.scala:51)
    at scala.collection.immutable.List.foreach(List.scala:318)
    at org.apache.spark.sql.catalyst.rules.RuleExecutor.apply(RuleExecutor.scala:51)
    at org.apache.spark.sql.SQLContext$QueryExecution.analyzed$lzycompute(SQLContext.scala:394)
    at org.apache.spark.sql.SQLContext$QueryExecution.analyzed(SQLContext.scala:394)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.optimizedPlan$lzycompute(HiveContext.scala:350)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.optimizedPlan(HiveContext.scala:349)
    at org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan$lzycompute(SQLContext.scala:399)
    at org.apache.spark.sql.SQLContext$QueryExecution.sparkPlan(SQLContext.scala:397)
    at org.apache.spark.sql.SQLContext$QueryExecution.executedPlan$lzycompute(SQLContext.scala:403)
    at org.apache.spark.sql.SQLContext$QueryExecution.executedPlan(SQLContext.scala:403)
    at org.apache.spark.sql.hive.HiveContext$QueryExecution.simpleString(HiveContext.scala:419)
    at org.apache.spark.sql.SchemaRDDLike$class.toString(SchemaRDDLike.scala:67)
    at org.apache.spark.sql.SchemaRDD.toString(SchemaRDD.scala:103)
    at scala.runtime.ScalaRunTime$.scala$runtime$ScalaRunTime$$inner$1(ScalaRunTime.scala:324)
    at scala.runtime.ScalaRunTime$.stringOf(ScalaRunTime.scala:329)
    at scala.runtime.ScalaRunTime$.replStringOf(ScalaRunTime.scala:337)
    at .<init>(<console>:10)
    at .<clinit>(<console>)
    at $print(<console>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:788)
    at org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1061)
    at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:614)
    at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:645)
    at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:609)
    at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:814)
    at org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:859)
    at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:771)
    at org.apache.spark.repl.SparkILoop.processLine$1(SparkILoop.scala:616)
    at org.apache.spark.repl.SparkILoop.innerLoop$1(SparkILoop.scala:624)
    at org.apache.spark.repl.SparkILoop.loop(SparkILoop.scala:629)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply$mcZ$sp(SparkILoop.scala:954)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:902)
    at org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:902)
    at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)
    at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:902)
    at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:997)
    at org.apache.spark.repl.Main$.main(Main.scala:31)
    at org.apache.spark.repl.Main.main(Main.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.spark.deploy.SparkSubmit$.launch(SparkSubmit.scala:314)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:73)
    at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

我还查看了HiveInspectors.scala（第 212 行typeInfoConversions）。那里似乎ArrayType没有定义。

4

1 回答 1

3

抱歉，我在 StackOverflow 上的声誉还不够高，无法发表评论。希望这个“答案”能很好地传达给你。无论如何，我正在使用 HiveContext 在 SparkSQL 上玩，并注意到 ArrayType 的行为非常相似。虽然它不能解决你的问题，但它可以解释为什么

事实证明，只有在使用 spark“内部”表结构时，HiveContext (Spark 1.1.0)才支持 ArrayType。每当您尝试访问 spark“外部”hive 表（即托管在元存储上）时，您可能会遇到类似的问题，即不支持 ArrayType。

这是一个简单的插图

// ************
// ArrayType is supported when playing with SparkSQL temp tables...
// ************

val sqlContext = org.apache.spark.sql.hive.HiveContext(sc)
val rdd = sqlContext.jsonFile("/tmp/test.json")
rdd.printSchema
/*
    root
    |-- id: integer (nullable = true)
    |-- names: array (nullable = true)
    |    |-- element: string (containsNull = false)
*/

sqlContext.registerRDDAsTable(rdd,"test")
val out = sqlContext.sql("SELECT names FROM test")

// ************
// ...But fail on Hive statements
// ************

sqlContext.sql("CREATE TABLE mytable AS SELECT names FROM test")

/*
    org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 5.0 failed 4 times, most recent failure: Lost task 0.3 in stage 5.0 (TID 16, vagrant): scala.MatchError: ArrayType(StringType,true) (of class org.apache.spark.sql.catalyst.types.ArrayType)
    org.apache.spark.sql.catalyst.expressions.Cast.cast$lzycompute(Cast.scala:247)
    org.apache.spark.sql.catalyst.expressions.Cast.cast(Cast.scala:247)
    org.apache.spark.sql.catalyst.expressions.Cast.eval(Cast.scala:263)
.../...
*/

我仍然不知道它失败的确切原因/位置，但 HiveContext 不（完全）支持 ArrayType。无论如何，我怀疑您在这里描述的问题与您的 jaccard UDF 函数有关。

或者，使用这样一个（工作）丑陋的黑客:)

sqlContext.sql("CREATE TABLE mytable AS SELECT split(concat_ws('#',names),'#') FROM test")
于 2014-11-09T02:52:49.953 回答