xuanyuanking commented on a change in pull request #32582:
URL: https://github.com/apache/spark/pull/32582#discussion_r643851762
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/state/RocksDBFileManager.scala
##########
@@ -17,18 +17,270 @@
package org.apache.spark.sql.execution.streaming.state
-import java.io.File
+import java.io.{File, FileInputStream, InputStream}
import java.nio.charset.StandardCharsets.UTF_8
import java.nio.file.Files
+import java.util.UUID
+import java.util.concurrent.ConcurrentHashMap
+import java.util.zip.{ZipEntry, ZipOutputStream}
+import scala.collection.JavaConverters._
import scala.collection.Seq
import com.fasterxml.jackson.annotation.JsonInclude.Include
import com.fasterxml.jackson.databind.{DeserializationFeature, ObjectMapper}
import com.fasterxml.jackson.module.scala.{DefaultScalaModule,
ScalaObjectMapper}
+import org.apache.commons.io.{FilenameUtils, IOUtils}
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.Path
import org.json4s.NoTypeHints
import org.json4s.jackson.Serialization
+import org.apache.spark.internal.Logging
+import org.apache.spark.sql.execution.streaming.CheckpointFileManager
+import org.apache.spark.util.Utils
+
+/**
+ * Class responsible for syncing RocksDB checkpoint files from local disk to
DFS.
+ * Every version checkpoint is saved in specific directory structure that
allows successive
Review comment:
Thanks, changed to `For each version` in 3800c51
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