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https://issues.apache.org/jira/browse/SPARK-9032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen updated SPARK-9032:
-----------------------------
Assignee: Josh Rosen
> scala.MatchError in DataFrameReader.json(String path)
> -----------------------------------------------------
>
> Key: SPARK-9032
> URL: https://issues.apache.org/jira/browse/SPARK-9032
> Project: Spark
> Issue Type: Bug
> Components: Java API, SQL
> Affects Versions: 1.4.0
> Environment: Ubuntu 15.04
> Reporter: Philipp Poetter
> Assignee: Josh Rosen
> Fix For: 1.4.1
>
>
> Executing read().json() of SQLContext e.g. DataFrameReader raises a
> MatchError with a stacktrace as follows while trying to read JSON data:
> {code}
> 15/07/14 11:25:26 INFO TaskSchedulerImpl: Removed TaskSet 0.0, whose tasks
> have all completed, from pool
> 15/07/14 11:25:26 INFO DAGScheduler: Job 0 finished: json at Example.java:23,
> took 6.981330 s
> Exception in thread "main" scala.MatchError: StringType (of class
> org.apache.spark.sql.types.StringType$)
> at org.apache.spark.sql.json.InferSchema$.apply(InferSchema.scala:58)
> at
> org.apache.spark.sql.json.JSONRelation$$anonfun$schema$1.apply(JSONRelation.scala:139)
> at
> org.apache.spark.sql.json.JSONRelation$$anonfun$schema$1.apply(JSONRelation.scala:138)
> at scala.Option.getOrElse(Option.scala:120)
> at
> org.apache.spark.sql.json.JSONRelation.schema$lzycompute(JSONRelation.scala:137)
> at org.apache.spark.sql.json.JSONRelation.schema(JSONRelation.scala:137)
> at
> org.apache.spark.sql.sources.LogicalRelation.<init>(LogicalRelation.scala:30)
> at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:120)
> at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:104)
> at org.apache.spark.sql.DataFrameReader.json(DataFrameReader.scala:213)
> at com.hp.sparkdemo.Example.main(Example.java:23)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:664)
> at
> org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:169)
> at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:192)
> at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:111)
> at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
> 15/07/14 11:25:26 INFO SparkContext: Invoking stop() from shutdown hook
> 15/07/14 11:25:26 INFO SparkUI: Stopped Spark web UI at http://10.0.2.15:4040
> 15/07/14 11:25:26 INFO DAGScheduler: Stopping DAGScheduler
> 15/07/14 11:25:26 INFO SparkDeploySchedulerBackend: Shutting down all
> executors
> 15/07/14 11:25:26 INFO SparkDeploySchedulerBackend: Asking each executor to
> shut down
> 15/07/14 11:25:26 INFO MapOutputTrackerMasterEndpoint:
> MapOutputTrackerMasterEndpoint stopped!
> {code}
> Offending code snippet (around line 23):
> {code}
> JavaSparkContext sctx = new JavaSparkContext(sparkConf);
> SQLContext ctx = new SQLContext(sctx);
> DataFrame frame = ctx.read().json(facebookJSON);
> frame.printSchema();
> {code}
> The exception is reproducable using the following JSON:
> {code}
> {
> "data": [
> {
> "id": "X999_Y999",
> "from": {
> "name": "Tom Brady", "id": "X12"
> },
> "message": "Looking forward to 2010!",
> "actions": [
> {
> "name": "Comment",
> "link": "http://www.facebook.com/X999/posts/Y999";
> },
> {
> "name": "Like",
> "link": "http://www.facebook.com/X999/posts/Y999";
> }
> ],
> "type": "status",
> "created_time": "2010-08-02T21:27:44+0000",
> "updated_time": "2010-08-02T21:27:44+0000"
> },
> {
> "id": "X998_Y998",
> "from": {
> "name": "Peyton Manning", "id": "X18"
> },
> "message": "Where's my contract?",
> "actions": [
> {
> "name": "Comment",
> "link": "http://www.facebook.com/X998/posts/Y998";
> },
> {
> "name": "Like",
> "link": "http://www.facebook.com/X998/posts/Y998";
> }
> ],
> "type": "status",
> "created_time": "2010-08-02T21:27:44+0000",
> "updated_time": "2010-08-02T21:27:44+0000"
> }
> ]
> }
> {code}
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