diff --git a/CHENGELOG.md b/CHENGELOG.md
index 602c2ea..496e5f4 100644
--- a/CHENGELOG.md
+++ b/CHENGELOG.md
@@ -1,3 +1,8 @@
+0.3.0 (2016-09-21)
+==================
+- [Incompatible Change] Not partitoning if files are compressed
+  - https://github.com/civitaspo/embulk-input-hdfs/pull/27
+
 0.2.1 (2016-02-25)
 ==================
 - [Fix] does not work
diff --git a/README.md b/README.md
index 47dff93..570890b 100644
--- a/README.md
+++ b/README.md
@@ -77,23 +77,26 @@ int partitionSizeByOneTask = totalFileLength / approximateNumPartitions;
 /*
 ...
 */
-
-    long numPartitions;
-    if (task.getPartition()) {
-        if (file.canDecompress()) {
-            numPartitions = ((fileLength - 1) / partitionSizeByOneTask) + 1;
-        }
-        else if (file.getCodec() != null) { // if not null, the file is compressed.
-            numPartitions = 1;
-        }
-        else {
-            numPartitions = ((fileLength - 1) / partitionSizeByOneTask) + 1;
-        }
-    }
-    else {
-        numPartitions = 1;
-    }
-
+            long numPartitions = 1; // default is no partition.
+            if (isPartitionable(task, conf, status)) { // partition: true and (decompression: false or CompressionCodec is null)
+                numPartitions = ((status.getLen() - 1) / partitionSizeByOneTask) + 1;
+            }
+
+            for (long i = 0; i < numPartitions; i++) {
+                long start = status.getLen() * i / numPartitions;
+                long end = status.getLen() * (i + 1) / numPartitions;
+                if (start < end) {
+                    TargetFileInfo targetFileInfo = new TargetFileInfo.Builder()
+                            .pathString(status.getPath().toString())
+                            .start(start)
+                            .end(end)
+                            .isDecompressible(isDecompressible(task, conf, status))
+                            .isPartitionable(isPartitionable(task, conf, status))
+                            .numHeaderLines(task.getSkipHeaderLines())
+                            .build();
+                    builder.add(targetFileInfo);
+                }
+            }
 /*
 ...
 */
diff --git a/build.gradle b/build.gradle
index 89e3677..3725d6b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@ configurations {
     provided
 }
 
-version = "0.2.1"
+version = "0.3.0"
 
 sourceCompatibility = 1.7
 targetCompatibility = 1.7