http://git-wip-us.apache.org/repos/asf/incubator-nifi/blob/376a9c6a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
----------------------------------------------------------------------
diff --git
a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
index b30e780..637b0c1 100644
---
a/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
+++
b/nifi/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
@@ -30,42 +30,53 @@ import java.util.Map;
import java.util.Set;
import java.util.UUID;
+import org.apache.commons.compress.archivers.ArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
+import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
+import org.apache.nifi.annotation.behavior.EventDriven;
+import org.apache.nifi.annotation.behavior.SideEffectFree;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.ReadsAttribute;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.documentation.WritesAttribute;
+import org.apache.nifi.annotation.documentation.WritesAttributes;
import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.flowfile.FlowFile;
import org.apache.nifi.flowfile.attributes.CoreAttributes;
-import org.apache.nifi.stream.io.BufferedInputStream;
-import org.apache.nifi.stream.io.BufferedOutputStream;
-import org.apache.nifi.stream.io.StreamUtils;
import org.apache.nifi.logging.ProcessorLog;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessContext;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.ProcessorInitializationContext;
import org.apache.nifi.processor.Relationship;
-import org.apache.nifi.annotation.documentation.CapabilityDescription;
-import org.apache.nifi.annotation.behavior.EventDriven;
-import org.apache.nifi.annotation.behavior.SideEffectFree;
-import org.apache.nifi.annotation.behavior.SupportsBatching;
-import org.apache.nifi.annotation.documentation.Tags;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.processor.io.InputStreamCallback;
import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.stream.io.BufferedInputStream;
+import org.apache.nifi.stream.io.BufferedOutputStream;
+import org.apache.nifi.stream.io.StreamUtils;
import org.apache.nifi.util.FlowFileUnpackager;
import org.apache.nifi.util.FlowFileUnpackagerV1;
import org.apache.nifi.util.FlowFileUnpackagerV2;
import org.apache.nifi.util.FlowFileUnpackagerV3;
import org.apache.nifi.util.ObjectHolder;
-import org.apache.commons.compress.archivers.ArchiveEntry;
-import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
-import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
-import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
-
@EventDriven
@SideEffectFree
@SupportsBatching
@Tags({"Unpack", "un-merge", "tar", "zip", "archive", "flowfile-stream",
"flowfile-stream-v3"})
@CapabilityDescription("Unpacks the content of FlowFiles that have been
packaged with one of several different Packaging Formats, emitting one to many
FlowFiles for each input FlowFile")
+@ReadsAttribute(attribute = "mime.type", description = "If the <Packaging
Format> property is set to use mime.type attribute, this attribute is used to
determine the FlowFile's MIME Type. In this case, if the attribute is set to
application/tar, the TAR Packaging Format will be used. If the attribute is set
to application/zip, the ZIP Packaging Format will be used. If the attribute is
set to application/flowfile-v3 or application/flowfile-v2 or
application/flowfile-v1, the appropriate FlowFile Packaging Format will be
used. If this attribute is missing, the FlowFile will be routed to 'failure'.
Otherwise, if the attribute's value is not one of those mentioned above, the
FlowFile will be routed to 'success' without being unpacked")
+@WritesAttributes({
+ @WritesAttribute(attribute = "mime.type", description = "If the
FlowFile is successfully unpacked, its MIME Type is no longer known, so the
mime.type attribute is set to application/octet-stream."),
+ @WritesAttribute(attribute = "fragment.identifier", description = "All
unpacked FlowFiles produced from the same parent FlowFile will have the same
randomly generated UUID added for this attribute"),
+ @WritesAttribute(attribute = "fragment.index", description = "A one-up
number that indicates the ordering of the unpacked FlowFiles that were created
from a single parent FlowFile"),
+ @WritesAttribute(attribute = "fragment.count", description = "The
number of unpacked FlowFiles generated from the parent FlowFile"),
+ @WritesAttribute(attribute = "segment.original.filename ", description
= "The filename of the parent FlowFile. Extensions of .tar, .zip or .pkg are
removed because the MergeContent processor automatically adds those extensions
if it is used to rebuild the original FlowFile") })
+@SeeAlso(MergeContent.class)
public class UnpackContent extends AbstractProcessor {
public static final String AUTO_DETECT_FORMAT = "use mime.type attribute";
