@Test(timeout = 300000) public void testMultiSlaveReplication() throws Exception { LOG.info("testCyclicReplication"); MiniHBaseCluster master = utility1.startMiniCluster(); utility2.startMiniCluster(); utility3.startMiniCluster(); ReplicationAdmin admin1 = new ReplicationAdmin(conf1); new HBaseAdmin(conf1).createTable(table); new HBaseAdmin(conf2).createTable(table); new HBaseAdmin(conf3).createTable(table); HTable htable1 = new HTable(conf1, tableName); htable1.setWriteBufferSize(1024); HTable htable2 = new HTable(conf2, tableName); htable2.setWriteBufferSize(1024); HTable htable3 = new HTable(conf3, tableName); htable3.setWriteBufferSize(1024); admin1.addPeer("1", utility2.getClusterKey()); // put "row" and wait 'til it got around, then delete putAndWait(row, famName, htable1, htable2); deleteAndWait(row, htable1, htable2); // check it wasn't replication to cluster 3 checkRow(row, 0, htable3); putAndWait(row2, famName, htable1, htable2); // now roll the region server's logs new HBaseAdmin(conf1).rollHLogWriter(master.getRegionServer(0).getServerName().toString()); // after the log was rolled put a new row putAndWait(row3, famName, htable1, htable2); admin1.addPeer("2", utility3.getClusterKey()); // put a row, check it was replicated to all clusters putAndWait(row1, famName, htable1, htable2, htable3); // delete and verify deleteAndWait(row1, htable1, htable2, htable3); // make sure row2 did not get replicated after // cluster 3 was added checkRow(row2, 0, htable3); // row3 will get replicated, because it was in the // latest log checkRow(row3, 1, htable3); Put p = new Put(row); p.add(famName, row, row); htable1.put(p); // now roll the logs again new HBaseAdmin(conf1).rollHLogWriter(master.getRegionServer(0).getServerName().toString()); // cleanup "row2", also conveniently use this to wait replication // to finish deleteAndWait(row2, htable1, htable2, htable3); // Even if the log was rolled in the middle of the replication // "row" is still replication. checkRow(row, 1, htable2, htable3); // cleanup the rest deleteAndWait(row, htable1, htable2, htable3); deleteAndWait(row3, htable1, htable2, htable3); utility3.shutdownMiniCluster(); utility2.shutdownMiniCluster(); utility1.shutdownMiniCluster(); }