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https://issues.apache.org/jira/browse/CASSANDRA-7148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Shuler resolved CASSANDRA-7148.
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Resolution: Incomplete
Closing as incomplete. Please, feel free to re-open this issue with some
additional info as requested, if you still need some help in determining if
this is indeed a bug or just a usage issue. Thanks!
> Auto pagination finds 999 791 out of 1 000 000 rows
> ---------------------------------------------------
>
> Key: CASSANDRA-7148
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7148
> Project: Cassandra
> Issue Type: Bug
> Reporter: bodrin
>
> In a cluster of 3 nodes cassandra 2.0.6 with replication factor=3 and with
> the following schema:
> CREATE TABLE IF NOT EXISTS test (
> org varchar,
> department varchar,
> id varchar,
> area varchar,
> value text, // json
> PRIMARY KEY ((org), department, id)
> );
> CREATE INDEX IF NOT EXISTS ON test(area);
> I have inserted 1 000 000 rows this way:
> String insert = "INSERT INTO test (org, department, id, area, value) VALUES
> (?, ?, ?, ?, ?)";
> for (int organization = 0; organization < 500; organization++) {
> for (int department = 0; department < 2; department++) {
> for (int area = 0; area < 2; area++) {
> for (int id = 0; id < 500; id++) {
> String orgValue = "org" + organization;
> String departmentValue = "department" +
> department;
> String areaValue = "area" + area;
> String idValue =
> UUID.randomUUID().toString();
> // insert a single row here
> ...
> Then just read them all:
> int count = 0;
> ResultSet rs = session.execute("select * from test limit 1000000");
> Iterator<Row> i = rs.iterator();
> while (i.hasNext()) {
> Row row = i.next();
> count++;
> }
>
> and the count is 999791 (this tooks 33 seconds)
> while at the same time
> cqlsh:t2> select count(*) from test limit 1000000;
> count
> ---------
> 1000000
> I have also verified that all the queries of kind
> select * from test where area=areaXXX
> return 500 entries as expected and 2000*500 is 1 000 000
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