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From "Andy Tolbert (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-13302) last row of previous page == first row of next page while querying data using SASI index
Date Mon, 06 Mar 2017 16:04:32 GMT
Andy Tolbert created CASSANDRA-13302:

             Summary: last row of previous page == first row of next page while querying data
using SASI index
                 Key: CASSANDRA-13302
             Project: Cassandra
          Issue Type: Bug
         Environment: Tested with C* 3.9 and 3.10.
            Reporter: Andy Tolbert

Apologies if this is a duplicate (couldn't track down an existing bug).

Similarly to [CASSANDRA-11208], it appears it is possible to retrieve duplicate rows when
paging using a SASI index as documented in [JAVA-1362|],
the following test demonstrates that data is repeated while querying using a SASI index:

public class TestPagingBug
	public static void main(String[] args)
		Cluster.Builder builder = Cluster.builder();
		Cluster c = builder.addContactPoints("").build();		
		Session s = c.connect();
		s.execute("CREATE KEYSPACE IF NOT EXISTS test WITH replication = { 'class' : 'SimpleStrategy',
'replication_factor' : 3 }");
		s.execute("CREATE TABLE IF NOT EXISTS test.test_table_sec(sec BIGINT PRIMARY KEY, id INT)");
                //create secondary index on ID column, used for select statement
                String index = "CREATE CUSTOM INDEX test_table_sec_idx ON test.test_table_sec
(id) USING 'org.apache.cassandra.index.sasi.SASIIndex' "
                + "WITH OPTIONS = { 'mode': 'PREFIX' }";
		PreparedStatement insert = s.prepare("INSERT INTO test.test_table_sec (id, sec) VALUES (1,
		for (int i = 0; i < 1000; i++)
			s.execute(insert.bind((long) i));
		PreparedStatement select = s.prepare("SELECT sec FROM test.test_table_sec WHERE id = 1");
		long lastSec = -1;		
		for (Row row : s.execute(select.bind().setFetchSize(300)))
			long sec = row.getLong("sec");
			if (sec == lastSec)
				System.out.println(String.format("Duplicated id %d", sec));
			lastSec = sec;

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