diff --git a/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java b/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
index 19e251ae805..fc65c474e6f 100644
--- a/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
+++ b/hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java
@@ -612,13 +612,20 @@ public final class HConstants {
*/
public static final UUID DEFAULT_CLUSTER_ID = new UUID(0L,0L);
- /**
- * Parameter name for maximum number of bytes returned when calling a
- * scanner's next method.
- */
+ /**
+ * Parameter name for maximum number of bytes returned when calling a scanner's next method.
+ * Controlled by the client.
+ */
public static final String HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY =
"hbase.client.scanner.max.result.size";
+ /**
+ * Parameter name for maximum number of bytes returned when calling a scanner's next method.
+ * Controlled by the server.
+ */
+ public static final String HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY =
+ "hbase.server.scanner.max.result.size";
+
/**
* Maximum number of bytes returned when calling a scanner's next method.
* Note that when a single row is larger than this limit the row is still
@@ -628,6 +635,16 @@ public final class HConstants {
*/
public static final long DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE = 2 * 1024 * 1024;
+ /**
+ * Maximum number of bytes returned when calling a scanner's next method.
+ * Note that when a single row is larger than this limit the row is still
+ * returned completely.
+ * Safety setting to protect the region server.
+ *
+ * The default value is 100MB. (a client would rarely request larger chunks on purpose)
+ */
+ public static final long DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE = 100 * 1024 * 1024;
+
/**
* Parameter name for client pause value, used mostly as value to wait
* before running a retry of a failed get, region lookup, etc.
diff --git a/hbase-common/src/main/resources/hbase-default.xml b/hbase-common/src/main/resources/hbase-default.xml
index 93776d7d841..c51ba16bc81 100644
--- a/hbase-common/src/main/resources/hbase-default.xml
+++ b/hbase-common/src/main/resources/hbase-default.xml
@@ -1306,6 +1306,16 @@ possible configurations would overwhelm and obscure the important.
+
+ hbase.server.scanner.max.result.size
+ 104857600
+ Maximum number of bytes returned when calling a scanner's next method.
+ Note that when a single row is larger than this limit the row is still returned completely.
+ The default value is 100MB.
+ This is a safety setting to protect the server from OOM situations.
+
+
+
hbase.status.published
false
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
index 10e39a18b13..f9b8d610040 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
@@ -820,8 +820,8 @@ public class RSRpcServices implements HBaseRPCErrorHandler,
HConstants.HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD,
HConstants.DEFAULT_HBASE_CLIENT_SCANNER_TIMEOUT_PERIOD);
maxScannerResultSize = rs.conf.getLong(
- HConstants.HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE_KEY,
- HConstants.DEFAULT_HBASE_CLIENT_SCANNER_MAX_RESULT_SIZE);
+ HConstants.HBASE_SERVER_SCANNER_MAX_RESULT_SIZE_KEY,
+ HConstants.DEFAULT_HBASE_SERVER_SCANNER_MAX_RESULT_SIZE);
// Set our address, however we need the final port that was given to rpcServer
isa = new InetSocketAddress(initialIsa.getHostName(), rpcServer.getListenerAddress().getPort());