scala - Spark 2.2 Illegal pattern component: XXX java.lang.IllegalArgumentException: Illegal pattern component: XXX

Question

I'm trying to upgrade from Spark 2.1 to 2.2. When I try to read or write a dataframe to a location (CSV or JSON) I am receiving this error:

Illegal pattern component: XXX
java.lang.IllegalArgumentException: Illegal pattern component: XXX
at org.apache.commons.lang3.time.FastDatePrinter.parsePattern(FastDatePrinter.java:282)
at org.apache.commons.lang3.time.FastDatePrinter.init(FastDatePrinter.java:149)
at org.apache.commons.lang3.time.FastDatePrinter.<init>(FastDatePrinter.java:142)
at org.apache.commons.lang3.time.FastDateFormat.<init>(FastDateFormat.java:384)
at org.apache.commons.lang3.time.FastDateFormat.<init>(FastDateFormat.java:369)
at org.apache.commons.lang3.time.FastDateFormat$1.createInstance(FastDateFormat.java:91)
at org.apache.commons.lang3.time.FastDateFormat$1.createInstance(FastDateFormat.java:88)
at org.apache.commons.lang3.time.FormatCache.getInstance(FormatCache.java:82)
at org.apache.commons.lang3.time.FastDateFormat.getInstance(FastDateFormat.java:165)
at org.apache.spark.sql.catalyst.json.JSONOptions.<init>(JSONOptions.scala:81)
at org.apache.spark.sql.catalyst.json.JSONOptions.<init>(JSONOptions.scala:43)
at org.apache.spark.sql.execution.datasources.json.JsonFileFormat.inferSchema(JsonFileFormat.scala:53)
at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$7.apply(DataSource.scala:177)
at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$7.apply(DataSource.scala:177)
at scala.Option.orElse(Option.scala:289)
at org.apache.spark.sql.execution.datasources.DataSource.getOrInferFileFormatSchema(DataSource.scala:176)
at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:366)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:178)
at org.apache.spark.sql.DataFrameReader.json(DataFrameReader.scala:333)
at org.apache.spark.sql.DataFrameReader.json(DataFrameReader.scala:279)

I am not setting a default value for dateFormat, so I'm not understanding where it is coming from.

spark.createDataFrame(objects.map((o) => MyObject(t.source, t.table, o.partition, o.offset, d)))
    .coalesce(1)
    .write
    .mode(SaveMode.Append)
    .partitionBy("source", "table")
    .json(path)

I still get the error with this:

import org.apache.spark.sql.{SaveMode, SparkSession}
val spark = SparkSession.builder.appName("Spark2.2Test").master("local").getOrCreate()
import spark.implicits._
val agesRows = List(Person("alice", 35), Person("bob", 10), Person("jill", 24))
val df = spark.createDataFrame(agesRows).toDF();

df.printSchema
df.show

df.write.mode(SaveMode.Overwrite).csv("my.csv")

Here is the schema: root |-- name: string (nullable = true) |-- age: long (nullable = false)

Answer 1

I found the answer.

The default for the timestampFormat is yyyy-MM-dd'T'HH:mm:ss.SSSXXX which is an illegal argument. It needs to be set when you are writing the dataframe out.

The fix is to change that to ZZ which will include the timezone.

df.write
.option("timestampFormat", "yyyy/MM/dd HH:mm:ss ZZ")
.mode(SaveMode.Overwrite)
.csv("my.csv")