anishshri-db commented on code in PR #49304:
URL: https://github.com/apache/spark/pull/49304#discussion_r1960600195
##########
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/RocksDBStateStoreProvider.scala:
##########
@@ -847,35 +828,47 @@ class RocksDBStateStoreChangeDataReader(
endVersion: Long,
compressionCodec: CompressionCodec,
keyValueEncoderMap:
- ConcurrentHashMap[String, (RocksDBKeyStateEncoder,
RocksDBValueStateEncoder)],
+ ConcurrentHashMap[String, (RocksDBKeyStateEncoder,
RocksDBValueStateEncoder, Short)],
colFamilyNameOpt: Option[String] = None)
extends StateStoreChangeDataReader(
fm, stateLocation, startVersion, endVersion, compressionCodec,
colFamilyNameOpt) {
override protected var changelogSuffix: String = "changelog"
- private def getColFamilyIdBytes: Option[Array[Byte]] = {
- if (colFamilyNameOpt.isDefined) {
- val colFamilyName = colFamilyNameOpt.get
- if (!keyValueEncoderMap.containsKey(colFamilyName)) {
- throw new IllegalStateException(
- s"Column family $colFamilyName not found in the key value encoder
map")
- }
- Some(keyValueEncoderMap.get(colFamilyName)._1.getColumnFamilyIdBytes())
- } else {
- None
- }
+ /**
+ * Encodes a virtual column family ID into a byte array suitable for RocksDB.
+ *
+ * This method creates a fixed-size byte array prefixed with the virtual
column family ID,
+ * which is used to partition data within RocksDB.
+ *
+ * @param virtualColFamilyId The column family identifier to encode
+ * @return A byte array containing the encoded column family ID
+ */
+ private def getColumnFamilyIdBytes(virtualColFamilyId: Short): Array[Byte] =
{
Review Comment:
Done
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