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https://issues.apache.org/jira/browse/CASSANDRA-4468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sylvain Lebresne resolved CASSANDRA-4468.
-----------------------------------------
Resolution: Duplicate
Closing in favor of CASSANDRA-4711 since it's the same bug.
> Temporally unreachable Dynamic Composite column names.
> ------------------------------------------------------
>
> Key: CASSANDRA-4468
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4468
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 1.1.0, 1.1.1, 1.1.2
> Environment: linux,
> Reporter: Cesare Cugnasco
> Priority: Minor
> Labels: persistence
> Attachments: BugFinder.java
>
>
> I was working on a Column family with a DynamicComposite column sorter when I
> noticed that sometimes, after the insertion of a column with a column name
> composed by a single string (eg 's@step'),it was possible to be reach the
> column only by slice query but not by direct access. For example using the
> cassandra-cli it is possible to query:
> get frame[int(26)];
> RowKey: 0000001a
> ....
> (column=i@19, value=00000013, timestamp=1343495134729000)
> => (column=s@step, value=746573742076616c7565, timestamp=1343495134680000)
> but typing 'get frame[int(26)]['s@step']' I got no result.
> I tested this behavior using also other clients such as Hector, Astyanax,
> Pycassa and directly Thrift.
> I wrote this java code with hector-core-1.1.0 to reproduce this bug.
> public static void main(String[] args) {
> String kname = "testspace3";
> Cluster myCluster = HFactory.getOrCreateCluster("Test-cluster",
> System.getProperty("location", "localhost:9160"));
> //creating the keyspace and Column family
> if (myCluster.describeKeyspace(kname) != null) {
> myCluster.dropKeyspace(kname, true);
> }
> ColumnFamilyDefinition cfd =
> HFactory.createColumnFamilyDefinition(kname, "frame",
> ComparatorType.DYNAMICCOMPOSITETYPE);
>
> cfd.setComparatorTypeAlias(DynamicComposite.DEFAULT_DYNAMIC_COMPOSITE_ALIASES);
> KeyspaceDefinition kdf = HFactory.createKeyspaceDefinition(kname,
> "SimpleStrategy", 1, Arrays.asList(cfd));
> myCluster.addKeyspace(kdf, true);
> Keyspace ksp = HFactory.createKeyspace(kname, myCluster);
> //Hector template definition
> ColumnFamilyTemplate<Integer, DynamicComposite> template =
> new ThriftColumnFamilyTemplate<Integer, DynamicComposite>(
> ksp,
> "frame",
> IntegerSerializer.get(),
> DynamicCompositeSerializer.get());
>
> DynamicComposite dc = new DynamicComposite();
> dc.addComponent("step", StringSerializer.get());
> DynamicComposite numdc = new DynamicComposite();
> numdc.addComponent(BigInteger.valueOf(62),
> BigIntegerSerializer.get());
> ColumnFamilyUpdater<Integer, DynamicComposite> cf =
> template.createUpdater(26);
> cf.setString(dc, "test value");
> cf.setString(numdc, "altro valore");
> template.update(cf);
> //without this parts it works. It works also with less then 4
> insertions
> cf = template.createUpdater(26);
> for (int i = 0; i < 4; i++) {
> DynamicComposite num = new DynamicComposite();
> num.addComponent(BigInteger.valueOf(i),
> BigIntegerSerializer.get());
> cf.setInteger(num, i);
> }
> template.update(cf);
> // end part
> HColumn<DynamicComposite, String> res =
> template.querySingleColumn(26, dc, StringSerializer.get());
> if (res == null) {
> System.out.println("[FAIL] Row not found");
> } else {
> System.out.println("[SUCCESS] Returned name " +
> res.getName().get(0).toString() + " - with value: " + res.getValue());
> }
> }
> The code acts three tasks: configure keyspace an CF, insert the data and try
> to retrieve it. After running the code the data are visible (by list for
> example) but not reachable directly. Restarting Cassandra the row is again
> reachable.
> Furthermore, after running that code, if I run on the cassandra-cli
> set frame[int(26)]['s@step']=utf8(test);
> with a "list frame[int(26)]'
> RowKey: 0000001a
> => (column=s@step, value=test value, timestamp=1343499335791000)
> => (column=i@0, value=00000000, timestamp=1343499335816000)
> => (column=i@1, value=00000001, timestamp=1343499335816000)
> => (column=i@2, value=00000002, timestamp=1343499335816000)
> => (column=i@3, value=00000003, timestamp=1343499335816000)
> => (column=s@step, value=test, timestamp=1343499384630000)
> I found 2 column with the apparently the same column name.
> How is it possible?
> Best regards,
> Cesare
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