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Questions tagged [datastax-enterprise]

DataStax Enterprise is big data platform consisting of open source tools such as Apache Cassandra, Solr and Hadoop (and several others).

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18 views

Multi-Keyspace with Cassandra's Java Driver on fly

Currently, We use Cassandra's Java driver to configure session based on the attributes defined in properties file which looks like this:Cluster cluster=Cluster.builder()....
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8 views

DSE 5.0 Custom Codecs in Scala - Intellij does not compile

I am trying to write a custom codec to convert Cassandra columns of type timestamp to org.joda.time.DateTime.I am building my project with sbt versions 0.13.13.I wrote a test that serializes and ...
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24 views

Cassandra C# - How to use 'CONTAINS' clausure with LINQ

We need execute this query on Cassandra Database through the C# driver(DataStax):select * from fenix where fenix_datacontains {fenixId: 1857ef80-be6b-4371-9006-390b2bf83581};Database settings:...
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8 views

DSE Tiered Storage Does not Remove SSTables From Previous Tier

I am testing DSE TieredStorage. I have two tiers as SSD, HDD. I am able to see that DSE writes SSTables after max_tier_age period ends. But DSE does not remove SSTables from SSD disk. It happens on my ...
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11 views

DSE Analytics in Cluster Configuration

Previously we had three nodes cluster with two Cassandra nodes datacenter in one dc and one spark enabled node in different dc. Spark was running smoothly in that configurations.Then we tried adding ...
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51 views

cassandra key cache not working

I am using DSE 6. I have default 100 MiB capacity for key cache. But There isn't any hit.nodetool info imageI checked saved_caches_directory and there isn't any key cache file. cache folder ...
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34 views

how use or enable key cache in DSE 6 (key-cache)

we are using DSE 6 and after getting very read and write timeout error I found that key cache dose does not enable in this version.how can I enable it?
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13 views

Datastax Studio control connection timeout setting

I am using DataStax Studio 6.0. We have network connectivity issues when trying to query the dse cluster in our data center. Want to check there is a supported configuration parameter in studio's ...
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42 views

s3 file read in DSE Spark job fails

I am using dse 5.1.0 (packaged with spark 2.0.2.6 and scala 2.11.8).Trying to run a spark job that reads file in s3 bucket(in Mumbai region).Getting "400: Bad Request" error.If same job is run on ...
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1answer
28 views

DSE 6 create solr cores through http

I'm attempting to use the following http request to create a solr core: http://localhost:8983/solr/admin/cores?action=CREATE&name=service_name.resource&generateResources=falseThe response ...
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17 views

New DSE Cassandra cluster system.hints missing

I recently installed DSE through LCM . Was just looking at internal keyspace and saw system.hints is missing in the list.Is it created internally in case of first node failure ?select table_name ...
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25 views

Cassandra Update - 'Where' with timestamp clustering key

I have a table in cassandra with following structure:CREATE TABLE answers (Id uuid,Name text,Description text,LastVersion boolean,CreationDate ...
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17 views

Cassandra - How to update an specific column using CassandraMapping

How update specific column using Mapping or LINQ on C# DataStax driver?Like this:_mapper.Update(POCO.Select(new POCO {UserName="New Name"}));Or this:var table=new Table<POCO>(session)...
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1answer
20 views

Not able start DSE-5.1.7, Log showing GC stats without starting Cassandra

INFO [Service Thread] 2018-07-31 09:38:32,553 GCInspector.java:284 - G1 Young Generation GC in 205ms. G1 Eden Space: 2965372928 -> 0; G1 Old Gen: 400556064 -> 448790568; G1 Survivor Space: ...
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2answers
23 views

Load Multiple Cores in Banana which are created in Datastax Solr

I want to load multiple cores which are created in Datastax Cassandra Solr.Objective is to create various Banana dashboards & provide to users on per Core basis.Currently I am able to do it by ...

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