What causes com.aerospike.client.AerospikeException: java.io.EOFException?

Question

What is the reason for this?

com.aerospike.client.AerospikeException: java.io.EOFException
    at com.aerospike.client.async.SelectorManager.processKey(SelectorManager.java:184) [aerospike-client-3.0.24.jar:?]
    at com.aerospike.client.async.SelectorManager.runCommands(SelectorManager.java:108) [aerospike-client-3.0.24.jar:?]
    at com.aerospike.client.async.SelectorManager.run(SelectorManager.java:69) [aerospike-client-3.0.24.jar:?]
Caused by: java.io.EOFException
    at com.aerospike.client.async.AsyncConnection.read(AsyncConnection.java:127) ~[aerospike-client-3.0.24.jar:?]
    at com.aerospike.client.async.AsyncSingleCommand.read(AsyncSingleCommand.java:48) ~[aerospike-client-3.0.24.jar:?]
    at com.aerospike.client.async.SelectorManager.processKey(SelectorManager.java:164) ~[aerospike-client-3.0.24.jar:?]
    ... 2 more

Answer 1

An EOFException is thrown when the socket connection is no longer valid. This usually happens because the server has closed the connection.

 /**
 * Read till byteBuffer limit reached or received would-block.
 */
public boolean read(ByteBuffer byteBuffer) throws IOException {
    while (byteBuffer.hasRemaining()) {
        int len = socketChannel.read(byteBuffer);

        if (len == 0) {         
            // Got would-block.
            return false;
        }

        if (len < 0) {
            // Server has shutdown socket.
                throw new EOFException();
        }
    }
    return true;
}