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HBASE-4777 Write back to client 'incompatible' if we show up with wrong version 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1201400 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2011-11-13 04:56:26 +00:00
parent 62b5c04786
commit 94a06fb391
2 changed files with 8 additions and 2 deletions
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1
CHANGES.txt
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@ -426,6 +426,7 @@ Release 0.92.0 - Unreleased
storefileUncompressedSizeMB (gaojinchao)
HBASE-4478 Improve AssignmentManager.handleRegion so that it can process certain ZK state
in the case of RS offline
HBASE-4777 Write back to client 'incompatible' if we show up with wrong version
TESTS
HBASE-4450 test for number of blocks read: to serve as baseline for expected

9
src/main/java/org/apache/hadoop/hbase/ipc/HBaseServer.java
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@ -90,7 +90,7 @@ public abstract class HBaseServer implements RpcServer {
* The first four bytes of Hadoop RPC connections
*/
public static final ByteBuffer HEADER = ByteBuffer.wrap("hrpc".getBytes());
public static final byte CURRENT_VERSION = 4;
public static final byte CURRENT_VERSION = 3;
/**
* How many calls/handler are allowed in the queue.
@ -1185,7 +1185,12 @@ public abstract class HBaseServer implements RpcServer {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
if (clientVersion >= 3) {
Call fakeCall = new Call(-1, null, this, responder);
// We used to return an id of -1 which caused server to close the
// connection without telling the client what the problem was. Now
// we return 0 which will keep the socket up -- bad clients, unless
// they switch to suit the running server -- will fail later doing
// getProtocolVersion.
Call fakeCall = new Call(0, null, this, responder);
// Versions 3 and greater can interpret this exception
// response in the same manner
setupResponse(buffer, fakeCall, Status.FATAL,