[PHOENIX-3007] Long-lasting writes suspends JDBC client forever.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.7.0

Environment

Client: jdk7 windows / linux
Server:
Linux Ubuntu 14.0.4
hbase 1.1.4
phoenix 4.7.0
/
Cloudera 5.5 quick start image

• Assignee: Unassigned
• Reporter: Krzysztof Bień
• Created: 20/Jun/16 12:13
• Updated: 20/Jun/16 12:24

Description

When try to write too many rows in one commit the client suspends forever.

It occurs in both modes: for transactional and non transactional tables.
However:
When using non-transactional table the data are succsessfully written on the server side after expected amount of time (client suspends).
When using transactional table the data are never written on the server side (client suspends).

I suspect that is connected with the timing. When a transaction lasts longer than approx. 100/120 seconds it will suspend forever.

This is my test for different number of rows:

ROWS	MODE	RESULT	TIME
100 000	non trans	OK	45 s
200 000	non trans	FAIL	suspends
10 000	trans	OK	21 s
80 000	trans	FAIL	suspends

I have tested in on many environments (cloudera 5.5 quickstart, tried also newer version of zookeeper: 3.4.8).

Here it is test program:

TestNonTransMain.java

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.Properties;
import org.apache.phoenix.query.QueryServices;


/*
 
 SCHEMA:
 create table test_nontrans (id bigint primary key, val varchar);
 
 */

public class Main_non_trans {


		public static void main(String args[]) throws Exception {

			
			String MAX_MUTATIONS = "10000000";
		    Properties prop = new Properties();
		    prop.setProperty(QueryServices.MAX_MUTATION_SIZE_ATTRIB, MAX_MUTATIONS);
		    prop.setProperty(QueryServices.INDEX_MUTATE_BATCH_SIZE_THRESHOLD_ATTRIB, MAX_MUTATIONS);
		    	
		    
		    //connect
		    Class.forName("org.apache.phoenix.jdbc.PhoenixDriver");
		    Connection conn =  DriverManager.getConnection("jdbc:phoenix:192.168.13.75:", prop);
		    conn.setAutoCommit(false);
		    System.out.println("got connection");
		    
		    
		    //write
		    final long start = System.currentTimeMillis();
		    PreparedStatement statement = conn.prepareStatement("upsert into test_nontrans(id, val) values(?, ?)");
  
		    
		    for(long i=1; i<=160000; i++)
		    {
		    	statement.setLong(1, i);
		    	statement.setString(2, "value " + i);
		    	statement.execute();
		    }
		    	
		    //commit
		    System.out.println("commiting...");
		    conn.commit();
		    
		    
		    System.out.println("Done in: " + (System.currentTimeMillis() - start)/1000.0 );
		    
		    
		  }	
}