Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/17216#discussion_r106709791
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/streaming/OffsetSeqLogSuite.scala
---
@@ -29,12 +30,32 @@ class OffsetSeqLogSuite extends SparkFunSuite with
SharedSQLContext {
case class StringOffset(override val json: String) extends Offset
test("OffsetSeqMetadata - deserialization") {
- assert(OffsetSeqMetadata(0, 0) === OffsetSeqMetadata("""{}"""))
- assert(OffsetSeqMetadata(1, 0) ===
OffsetSeqMetadata("""{"batchWatermarkMs":1}"""))
- assert(OffsetSeqMetadata(0, 2) ===
OffsetSeqMetadata("""{"batchTimestampMs":2}"""))
- assert(
- OffsetSeqMetadata(1, 2) ===
-
OffsetSeqMetadata("""{"batchWatermarkMs":1,"batchTimestampMs":2}"""))
+ val key = SQLConf.SHUFFLE_PARTITIONS.key
+
+ def getConfWith(shufflePartitions: Int): Map[String, String] = {
+ Map(key -> shufflePartitions.toString)
+ }
+
+ // None set
+ assert(OffsetSeqMetadata(0, 0, Map.empty) ===
OffsetSeqMetadata("""{}"""))
+
+ // One set
+ assert(OffsetSeqMetadata(1, 0, Map.empty) ===
OffsetSeqMetadata("""{"batchWatermarkMs":1}"""))
+ assert(OffsetSeqMetadata(0, 2, Map.empty) ===
OffsetSeqMetadata("""{"batchTimestampMs":2}"""))
+ assert(OffsetSeqMetadata(0, 0, getConfWith(shufflePartitions = 2)) ===
+ OffsetSeqMetadata(s"""{"conf": {"$key":2}}"""))
+
+ // Two set
+ assert(OffsetSeqMetadata(1, 2, Map.empty) ===
+ OffsetSeqMetadata("""{"batchWatermarkMs":1,"batchTimestampMs":2}"""))
+ assert(OffsetSeqMetadata(1, 0, getConfWith(shufflePartitions = 3)) ===
+ OffsetSeqMetadata(s"""{"batchWatermarkMs":1,"conf": {"$key":3}}"""))
+ assert(OffsetSeqMetadata(0, 2, getConfWith(shufflePartitions = 3)) ===
+ OffsetSeqMetadata(s"""{"batchTimestampMs":2,"conf": {"$key":3}}"""))
+
+ // All set
+ assert(OffsetSeqMetadata(1, 2, getConfWith(shufflePartitions = 3)) ===
+
OffsetSeqMetadata(s"""{"batchWatermarkMs":1,"batchTimestampMs":2,"conf":
{"$key":3}}"""))
--- End diff --
nit: could you add a test to verify that unknown fields don't break the
serialization? Such as
```Scala
assert(OffsetSeqMetadata(1, 2, getConfWith(shufflePartitions = 3)) ===
OffsetSeqMetadata(
s"""{"batchWatermarkMs":1,"batchTimestampMs":2,"conf":
{"$key":3}},"unknown":1"""))
```
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