bigquery Repeated record added outside of an array - scala

Question

Error:
Exception in thread "main" java.lang.RuntimeException
{"errors":[{"debugInfo":"generic::failed_precondition: Repeated record added outside of an array.","reason":"invalid"}],"index":0}
Language: Scala
Gradle bigquery dependency:
compile "com.google.apis:google-api-services-bigquery:v2-rev326-1.22.0"
The code to generate table schema:
import scala.collection.JavaConversions._
val orderTableSchema = new TableSchema()
orderTableSchema.setFields(Seq(
new TableFieldSchema().setName("revisionId").setType("STRING").setMode("REQUIRED"),
new TableFieldSchema().setName("executions").setType("RECORD").setMode("REPEATED").setFields(Seq(
new TableFieldSchema().setName("ts").setType("INTEGER"),
new TableFieldSchema().setName("price").setType("FLOAT"),
new TableFieldSchema().setName("qty").setType("INTEGER")
))
))
The table is created successfully with correct schema for executions column as shown in BigQuery web ui:
revisionId STRING REQUIRED
executions RECORD REPEATED
executions RECORD REPEATED
executions.ts INTEGER NULLABLE
executions.price FLOAT NULLABLE
executions.qty INTEGER NULLABLE
The code to insert data which fails:
import scala.collection.JavaConversions._
val row = new TableRow()
.set("revisionId", "revision1")
.set("executions", Seq(
new TableRow().set("ts", 1L).set("price", 100.01).set("qty", 1000)
))
val content = new TableDataInsertAllRequest().setRows(Seq(
new TableDataInsertAllRequest.Rows().setJson(row)
))
val insertAll = bigQuery.tabledata().insertAll(projectId, datasetId, "order", content)
val insertResponse = insertAll.execute()
if (insertResponse.getInsertErrors != null) {
insertResponse.getInsertErrors.foreach(println)
// this prints:
// {"errors":[{"debugInfo":"generic::failed_precondition: Repeated record added outside of an array.","reason":"invalid"}],"index":0}
// throw to just terminate early for demo
throw new RuntimeException()
}

Answer 1

Found the problem.
It's something with scala-to-java collections conversions mess. I had to explicitly add the conversion using JavaConversions.seqAsJavaList and it magically started working
val row = new TableRow()
.set("revisionId", s"revisionId$v")
.set("executions", JavaConversions.seqAsJavaList(Seq(
new TableRow().set("ts", 1L).set("price", 100.01).set("qty", 1000),
new TableRow().set("ts", 2L).set("price", 100.02).set("qty", 2000),
new TableRow().set("ts", 3L).set("price", 100.03).set("qty", 3000)
)))