rookie7799 on "Java Driver"
Hello all,I have a question regarding Java Driver and CQL3. WE have a simple table: CREATE TABLE test ( profile_id int, gender int, PRIMARY KEY (profile_id) ); When we run: ResultSet results =...
View Articleneethusabraham on "Not able to view data through Hive mapping to Cassandra"
Hi, After loading data from Oracle DB to Cassandra via Sqoop, I was able to view my data through both Cassandra and Hive. I was told that while doing so, 2 files would be generated for each, creating...
View Articlealdep on "8GB memory limit with Java 7"
Datastax recommends to have 8GB limit on JVM's memory “In most cases, the capability of Java 6 to gracefully handle garbage collection above 8GB quickly diminishes.”Is it the still the case with Java...
View ArticleLauro on "Error when importing from Postgresql to Cassandra using Sqoop."
I am following the documentation and I used the following command to import a small table from postgresql to cassandra:./dse sqoop import --connect jdbc:postgresql://127.0.0.1/mydb --username ***...
View Articlerussss on "Adding cluster: "Error creating cluster: Call to /cluster-configs...
On trying to add an existing Cassandra 2.0 cluster to OpsCenter Free 3.2.2, the web interface gives me "Error creating cluster: Call to /cluster-configs timed out.". The log 2013-09-26 14:41:53+0000 []...
View ArticleVinod on "LDAP integration with Opscenter URL"
I have checked the Datastax documentation but could not find any reference which mentions how to authenticate opscenter URL with LDAP. Is there any documentation available in this matter.Thanks in...
View Articlermenn on "Error Installing Opscenter Community"
I see the following error while trying to install opscenter, any insights on why this is occurring.yum install opscenter-free -y Loaded plugins: priorities, update-motd, upgrade-helper 690 packages...
View Articlemharwida on "Memory Leak."
Hi,I'm getting the following message in my Cassandra console;SEVERE: The web application [/solr] appears to have started a thread named [SolrSecondaryIndex reloader thread.] but has failed to stop it....
View Articlemharwida on "Cassandra and Hadoop"
Hi,I see the following messages on the console after issuing a dump in Pig. I have previously loaded the data from a Cassandra table which has over 15 Million records into a pig relation. I'm running a...
View Articletristanls on "Caused by: java.lang.ClassNotFoundException:...
Do I need to do something extra to work with DataImportHandler?I'm trying to get the DataImportHandler to work. I start dse using:./bin/dse -v3.0./bin/dse cassandra -sI upload solrconfig.xml,...
View ArticleAnonymous on "OpCenter : Error install agent"
Hi,I have installed successfully OpsCenter from the Debian package.When I've tried the automatic installation of the agent I got this error (when i click on the button "install on all nodes" : Error...
View Articlel2l on "OpsCenter Agent error"
I am new to cassandra and trying to setup single node and OpsCenter on seperate Linux box. Cassandra and Opcenter started with no errors, but when the agent is started, I'm seeing connection problems,...
View ArticleAnonymous on "FreeBSD OpsCenter Agent"
Hi,We're running a trial setup of Cassandra and want to setup OpsCenter. We use FreeBSD as the operating system. Cassandra is up and running on a couple of nodes and we've got OpsCenter up and running...
View Articlesnake64 on "SStableloader exception"
Hi everyone, well now I'm in the step of bulk the sstableloader over my tables in the keyspace. i have 3 nodes ready and configurated, so i proceed to use the sstableloader. At first everything is...
View Articlesnake64 on "Bulk loading in cassandra"
Hi everyone,well let's see...I want to bulk a csv, with a 700.000 registers, in a table created in a keyspace. I read some blogs where described carefully how to do this. at first i tried with the...
View Articlegouranga.basak on "Pig Java client error when reading Cassandra Column Family...
Hi All, I need to execute Pig script using java client which will read data from Cassandra Column Family but when I am executing the script getting below error. I am using DataStax 3.1.3 Help to...
View ArticleAkshay on "TermComponent for Distributed Search gives me null pointer...
I have a cluster with 4 nodes running dse. If I try to make a call to the TermsComponentHandler on one of the nodes, I am required to specify the other shards as well according to...
View ArticleGloria on "Does CQL3 provide Java API"
Does CQL3 provide Java APIs to use? Any help is greatly appreciated.
View Articlenate on "How to calculate initial token of murmur3Partioner for multiple data...
In the signal data center, I know. Just use the: python -c 'print [str(((2**64 / number_of_tokens) * i) - 2**63) for i in range(number_of_tokens)]'But what if in multiple data center?
View Articlesantushet on "Unable to export data from Cassandra to MySql"
Hi,We are facing problem while exporting data from Cassandra to MySql database. For example, 1. I have created keyspace called test_ks and column family called test_cf in cassandra using cql. I have...
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