HBASE-18446 Mark StoreFileScanner/StoreFileReader as IA.LimitedPrivate(Phoenix)
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
index ae57747..9f16c7c 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
@@ -239,8 +239,7 @@
    * effect in this hook.
    * @param c the environment provided by the region server
    * @param store the store being compacted
-   * @param scanners the list {@link org.apache.hadoop.hbase.regionserver.StoreFileScanner}s
-   *  to be read from
+   * @param scanners the list of store file scanners to be read from
    * @param scanType the {@link ScanType} indicating whether this is a major or minor compaction
    * @param earliestPutTs timestamp of the earliest put that was found in any of the involved store
    *          files
@@ -1034,7 +1033,9 @@
    * @param reader the base reader, if not {@code null}, from previous RegionObserver in the chain
    * @return a Reader instance to use instead of the base reader if overriding
    * default behavior, null otherwise
+   * @deprecated For Phoenix only, StoreFileReader is not a stable interface.
    */
+  @Deprecated
   default StoreFileReader preStoreFileReaderOpen(ObserverContext<RegionCoprocessorEnvironment> ctx,
       FileSystem fs, Path p, FSDataInputStreamWrapper in, long size, CacheConfig cacheConf,
       Reference r, StoreFileReader reader) throws IOException {
@@ -1053,7 +1054,9 @@
    * @param r original reference file. This will be not null only when reading a split file.
    * @param reader the base reader instance
    * @return The reader to use
+   * @deprecated For Phoenix only, StoreFileReader is not a stable interface.
    */
+  @Deprecated
   default StoreFileReader postStoreFileReaderOpen(ObserverContext<RegionCoprocessorEnvironment> ctx,
       FileSystem fs, Path p, FSDataInputStreamWrapper in, long size, CacheConfig cacheConf,
       Reference r, StoreFileReader reader) throws IOException {
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileReader.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileReader.java
index 06f42c8..e3f97a2 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileReader.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileReader.java
@@ -18,8 +18,6 @@
  */
 package org.apache.hadoop.hbase.regionserver;
 
-import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;
-
 import java.io.DataInput;
 import java.io.IOException;
 import java.util.Map;
@@ -34,9 +32,9 @@
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellComparator;
 import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.KeyValue;
-import org.apache.yetus.audience.InterfaceAudience;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.io.FSDataInputStreamWrapper;
 import org.apache.hadoop.hbase.io.TimeRange;
@@ -49,11 +47,16 @@
 import org.apache.hadoop.hbase.util.BloomFilter;
 import org.apache.hadoop.hbase.util.BloomFilterFactory;
 import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.yetus.audience.InterfaceAudience;
+import org.apache.yetus.audience.InterfaceStability;
+
+import org.apache.hadoop.hbase.shaded.com.google.common.annotations.VisibleForTesting;
 
 /**
  * Reader for a StoreFile.
  */
-@InterfaceAudience.Private
+@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.PHOENIX)
+@InterfaceStability.Evolving
 public class StoreFileReader {
   private static final Log LOG = LogFactory.getLog(StoreFileReader.class.getName());
 
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java
index e1d4c87..08111dc 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java
@@ -32,8 +32,10 @@
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellComparator;
 import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.yetus.audience.InterfaceAudience;
+import org.apache.yetus.audience.InterfaceStability;
 import org.apache.hadoop.hbase.client.Scan;
 import org.apache.hadoop.hbase.io.TimeRange;
 import org.apache.hadoop.hbase.io.hfile.HFileScanner;
@@ -43,7 +45,8 @@
  * KeyValueScanner adaptor over the Reader.  It also provides hooks into
  * bloom filter things.
  */
-@InterfaceAudience.LimitedPrivate("Coprocessor")
+@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.PHOENIX)
+@InterfaceStability.Evolving
 public class StoreFileScanner implements KeyValueScanner {
   // the reader it comes from:
   private final StoreFileReader reader;