I am working on cassandra 1.2.3 and using hector 1.1-3 When I fetch columns using SliceQuery, it returns me all the columns with the same datatype. Is there any way that QueryResult have object as the datatype of column values? If I use bytebuffer , So if I want to return multiple columns containing different data types(as a wrapper method over Hector), what data type do I return from my wrapper method?? I obviously won't know which column will have which data type & I can't return ByteBuffer as a generic column value type. Can anyone help me out with this?

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Hi

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I am new to Cassandra and have been using the Hector Template API's. My question here is how do I use Row Level Isolation when I am trying to update. 

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Hello guys!!!

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Hi guys,

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How to insert DateType value from Hector client in columnfamily? Is need any external  library?

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I am trying to use CQL3 through the Hector API.  I've had some limited successes, but they are matched and exceeded by failures :(  Some successes include:  Insertion of data with UUID keys through the Mutator, limited query successes.

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Good Afternoon Everyone,

The Apache Gora team are proud to announce the release of Gora 0.3.
The Apache Gora open source framework provides an in-memory data model and persistence for big data. Gora supports persisting to column stores, key value stores, document stores and RDBMSs, and analyzing the data with extensive Apache Hadoop™ MapReduce support. Gora uses the Apache Software License v2.0.

Gora currently uses Hector Client as the underlying Cassandra client and we have been working to make sure that the gora-cassandra module was improved within this release.

This point release offers users significant improvements to a number of modules including a number of bug fixes, however of significant interest to the DynamoDB community will be the addition of a gora-dynamodb datastore for mapping and persisting objects to Amazon's DynamoDB [0]. Additionally the release includes various improvements to the gora-core module and a new Web Services API implementation which enables users to extend Gora to any cloud storage platform. A full list of changes in this release can be seen here [1].

You can grab the maven release artifacts from Maven Central and can also get the Gora sources from our download page [2]

A full PMC announcement can be seen in our news feed here [3].

Thank you have a great week.
Kind Regards
Lewis
(on behalf of the Apache Gora project and community)

[0] http://aws.amazon.com/dynamodb/
[1] http://www.apache.org/dist/gora/0.3/CHANGES.txt
[2] http://gora.staging.apache.org/downloads.html
[3] http://gora.staging.apache.org/index.html

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Hello All,

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we have 4 node (8core + 32GB)：node A: client，node B、C、D: cassandra node.

public class HectorTest {

static String clusterName = "test-cluster";

static String keyspace = "ks1";

static String cfName = "cf1";

static Cluster cluster = HFactory.getOrCreateCluster(clusterName, "node-B:9160,node-C:9160,node-D:9160");

static Keyspace ksp = HFactory.createKeyspace(keyspace, cluster);

static final int BATCH_SIZE = 5000;

public static void main(String[] args) {

System.out.println(cluster.getKnownPoolHosts(true));

final HectorTest t = new HectorTest();

// t.createKeySpaceAndCf();

final int MAX_THREAD = Integer.parseInt(args[0]);

final int MAX_RECORD = Integer.parseInt(args[1]);

System.out.println("total record: " + MAX_RECORD * MAX_THREAD);

ExecutorService exec = Executors.newFixedThreadPool(MAX_THREAD);

for (int i = 0; i < MAX_THREAD; i++) {

final int threadIndex = i;

Thread thread = new Thread(new Runnable() {

public void run() {

t.batchInsert(threadIndex, MAX_RECORD, BATCH_SIZE);

}

});

exec.execute(thread);

}

exec.shutdown();

while (!exec.isTerminated()) {

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

cluster.getConnectionManager().shutdown();

}

public void batchInsert(int threadIndex, int count, int batchSize) {

long s = System.currentTimeMillis();

Mutator<String> m = HFactory.createMutator(ksp, StringSerializer.get());

int index = 0;

for (int i = 0; i < count; i++) {

m.addInsertion("rowkey-" + threadIndex + "-" + RandomStringUtils.random(3) + i, cfName, HFactory.createStringColumn(RandomStringUtils.random(10), RandomStringUtils.random(100)));

if (index++ % batchSize == 0) {

m.execute();

index = 0;

}

}

m.execute();

System.out.printf("thread %d %d \n", threadIndex, (System.currentTimeMillis() - s) / 1000);

}

}

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