[英]AWS Data Pipeline S3 to DynamoDB JSON Error
I'm trying to import a TSV file from S3 into DynamoDB using Data Pipelines, but I keep hitting a MalformedJsonException
. 我正在尝试使用数据管道将TSV文件从S3导入DynamoDB,但是我一直遇到
MalformedJsonException
异常。 I've validated both pieces of Json that I provide: the definition of the data pipeline and the manifest of the S3 folder, so that's not the problem. 我已经验证了我提供的Json的两个部分:数据管道的定义和S3文件夹的清单,所以这不是问题。 Is there any way to go about figuring out what Json is malformed?
有什么办法可以弄清楚Json的畸形吗?
Definition of the job: 工作的定义:
{
"objects": [
{
"output": {
"ref": "DDBDestinationTable"
},
"input": {
"ref": "S3InputDataNode"
},
"maximumRetries": "2",
"name": "TableLoadActivity",
"step": "s3://dynamodb-emr-#{myDDBRegion}/emr-ddb-storage-handler/2.1.0/emr-ddb-2.1.0.jar,org.apache.hadoop.dynamodb.tools.DynamoDbImport,#{input.directoryPath},#{output.tableName},#{output.writeThroughputPercent}",
"runsOn": {
"ref": "EmrClusterForLoad"
},
"id": "TableLoadActivity",
"type": "EmrActivity",
"resizeClusterBeforeRunning": "true"
},
{
"column": [
"property_id STRING",
"addr_line_1 STRING",
...
],
"name": "DefaultDataFormat1",
"id": "DataFormatId_JMZkM",
"type": "TSV"
},
{
"bootstrapAction": "s3://#{myDDBRegion}.elasticmapreduce/bootstrap-actions/configure-hadoop, --mapred-key-value,mapreduce.map.speculative=false",
"name": "EmrClusterForLoad",
"coreInstanceCount": "1",
"coreInstanceType": "m3.xlarge",
"amiVersion": "3.9.0",
"id": "EmrClusterForLoad",
"masterInstanceType": "m3.xlarge",
"region": "#{myDDBRegion}",
"type": "EmrCluster",
"terminateAfter": "1 Month"
},
{
"directoryPath": "#{myInputS3Loc}",
"dataFormat": {
"ref": "DataFormatId_JMZkM"
},
"name": "S3InputDataNode",
"id": "S3InputDataNode",
"type": "S3DataNode"
},
{
"writeThroughputPercent": "#{myDDBWriteThroughputRatio}",
"name": "DDBDestinationTable",
"id": "DDBDestinationTable",
"type": "DynamoDBDataNode",
"tableName": "#{myDDBTableName}"
},
{
"failureAndRerunMode": "CASCADE",
"resourceRole": "DataPipelineDefaultResourceRole",
"role": "DataPipelineDefaultRole",
"pipelineLogUri": "s3://log-bucket/",
"scheduleType": "ONDEMAND",
"name": "Default",
"id": "Default"
}
],
"parameters": [
{
"description": "Input S3 folder",
"id": "myInputS3Loc",
"type": "AWS::S3::ObjectKey"
},
{
"description": "Target DynamoDB table name",
"id": "myDDBTableName",
"type": "String"
},
{
"default": "0.25",
"watermark": "Enter value between 0.1-1.0",
"description": "DynamoDB write throughput ratio",
"id": "myDDBWriteThroughputRatio",
"type": "Double"
},
{
"default": "us-east-1",
"watermark": "us-east-1",
"description": "Region of the DynamoDB table",
"id": "myDDBRegion",
"type": "String"
}
],
"values": {
"myDDBRegion": "us-east-1",
"myDDBTableName": "TableName",
"myDDBWriteThroughputRatio": "0.5",
"myInputS3Loc": "s3://input/folder/"
}
}
Exception: 例外:
24 Jan 2018 23:59:56,657 [INFO] (TaskRunnerService-df-02737991EW1XAIM4T1PD_@EmrClusterForLoad_2018-01-24T23:27:35-0) df-02737991EW1XAIM4T1PD amazonaws.datapipeline.taskrunner.LogMessageUtil: Returning tail errorMsg : at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:170)
Caused by: com.google.gson.stream.MalformedJsonException: Expected ':' at line 1 column 36
at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1298)
at com.google.gson.stream.JsonReader.objectValue(JsonReader.java:762)
at com.google.gson.stream.JsonReader.peek(JsonReader.java:380)
at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:158)
at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:188)
at com.google.gson.internal.bind.MapTypeAdapterFactory$Adapter.read(MapTypeAdapterFactory.java:146)
at com.google.gson.Gson.fromJson(Gson.java:755)
... 17 more
Exception in thread "main" java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:836)
at org.apache.hadoop.dynamodb.tools.DynamoDbImport.run(DynamoDbImport.java:68)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
at org.apache.hadoop.dynamodb.tools.DynamoDbImport.main(DynamoDbImport.java:30)
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.hadoop.util.RunJar.main(RunJar.java:212)
In the AWS console, click Create new pipeline
and Import a definition
and see whether your json can be imported correctly. 在AWS控制台中,单击
Create new pipeline
并Import a definition
然后查看是否可以正确导入您的json。
Do you create the pipeline from the command line? 您是否从命令行创建管道? I suspect there is some problem with this command.
我怀疑此命令存在一些问题。
I assume the ...
are not present in your actual json :) 我假设
...
不在您的实际json中:)
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