Test fail randomly

[Julien Ruchaud]

Hi,

I am a newbie on hbase. Currently I am testing hbase 0.20.0, but I don't
understand why my test don't run correctly sometimes :

    public void testLoop() throws Exception {
        HTable hTable = new HTable(new HBaseConfiguration(), 
Bytes.toBytes("Table"));
        byte[] rowId = Bytes.toBytes("Test");

        for (int j = 0; j < 10; j++) {
            Put put = new Put(rowId);
            put.add(Bytes.toBytes("data"), Bytes.toBytes("1:" + j), 
Bytes.toBytes(j));
            hTable.put(put);
        }

        for (int j = 0; j < 10; j++) {
            Get get = new Get(rowId);
            Result row = hTable.get(get);
            if(row.getValue(Bytes.toBytes("data"), Bytes.toBytes("1:" + j)) == 
null) {
                throw new Exception("Error 1");
            }
        }

        for (int j = 0; j < 10; j++) {
                Delete delete = new Delete(rowId);
                hTable.delete(delete);
        }

        for (int j = 0; j < 10; j++) {
            Put put = new Put(rowId);
            put.add(Bytes.toBytes("data"), Bytes.toBytes("2:" + j), 
Bytes.toBytes(j));
            hTable.put(put);
        }

        for (int j = 0; j < 10; j++) {
            Get get = new Get(rowId);
            Result row = hTable.get(get);
            if(row.getValue(Bytes.toBytes("data"), Bytes.toBytes("2:" + j)) == 
null) {
                throw new Exception("Error 2");
            }
        }
    }

In fact I have got exception "Error 2" with a exception in hbase log :

2009-10-09 16:39:34,829 WARN org.apache.zookeeper.server.NIOServerCnxn: 
Exception causing close of session 0x124393fc5390046 due to 
java.io.IOException: Read error
2009-10-09 16:39:34,829 DEBUG org.apache.zookeeper.server.NIOServerCnxn: 
IOException stack trace
java.io.IOException: Read error
        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:366)
        at 
org.apache.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:220)
2009-10-09 16:39:34,830 INFO org.apache.zookeeper.server.NIOServerCnxn: closing 
session:0x124393fc5390046 NIOServerCnxn: 
java.nio.channels.SocketChannel[connected local=/127.0.0.1:2181 
remote=/127.0.0.1:48870]
2009-10-09 16:39:34,830 DEBUG org.apache.zookeeper.server.NIOServerCnxn: 
ignoring exception during input shutdown
java.net.SocketException: Transport endpoint is not connected
        at sun.nio.ch.SocketChannelImpl.shutdown(Native Method)
        at 
sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:640)
        at sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
        at 
org.apache.zookeeper.server.NIOServerCnxn.close(NIOServerCnxn.java:841)
        at 
org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:492)
        at
org.apache.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:220)

Thanks in advance for your input

Julien Ruchaud