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Questions tagged [datastax]

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

DataStax Astra simplifies cloud-native application development, and reduces time to deploy Apache Cassandra and scale from days to minutes. DataStax Astra eliminates the operational overhead of using Apache Cassandra, the open-source NoSQL database behind the largest applications in the world. Learn more on datastax.com/dev about new APIs for REST, schemaless document-style JSON, and GraphQL APIs for Cassandra - available with the Astra cloud service and stargate.io for standalone Cassandra.

For those who prefer self-managed technology, DataStax Enterprise (DSE) is a big data platform that provides a version of Cassandra enhanced with enterprise security features and that adds support for more workload types such as graph, search, and analytics. DataStax Enterprise enables companies to build transformational data architectures for applications, microservices and experiences that require data sovereignty, availability, scale, agility, and accessibility by any user.

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Cassandra heap size configuration not changing

Details: Node is having 31G of memory. DSE: 5.1.3 => Cassandra 3.11.2 java -version openjdk version "1.8.0_222" OpenJDK Runtime Environment (build 1.8.0_222-b10) OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode) Configuration changes tried…
Pramod
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How to shutdown a spark application without knowing driver Id via spark-submit

We are using DSE Analytics. I am trying to schedule a spark job using crontab , via spark-submit. Basically this job should run every night , When the job is about to be submitted for subsequent times , the existing application should be killed ,…
zXor
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Collections$UnmodifiableRandomAccessList Cassandra Frozen Map

I have a below UDT in my table productsinfo FROZEN and this is the UDT schema for productsinfo "owned_product_details" map>>>, "available_product_details" map
Krishna
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Directory is not copying to dse fs

I am trying to copy folder from server to dse fs but it is gettng saved as file dse fs "put file:/home/dir /" Getting this error IOException: is a directory Is there any way to copy directory to dse filesystem
Kumar Harsh
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what should be the optimum value of max_schema_agreement_wait in cassandra, by default it is 10

what should be the optimum value of max_schema_agreement_wait in cassandra cluster, by default it is 10. Most of the time I'm getting this error while schema creation: "2019-07-29 21:26:32,003 ERROR {"timestamp": "2019-07-29T21:26:32.003571+00:00",…
Tomyhill
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How to connect to Cassandra within a docker container in order to view on DBVisualize on host machine?

I currently have a Docker container with Cassandra running within. I am trying to get a visual view using DBVisualizer of said Cassandra. I am using DataStax's Cassandra JDBC driver. I run my container like so: docker run --rm -it --net=host -p…
Jeffery Lee
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CodecNotFoundException: Codec not found for requested operation: [date <-> java.util.Date]

I am using below Datastax versions with Java 8: com.datastax.cassandra cassandra-driver-core 3.7.2 …
BdEngineer
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Error java.net.UnknownHostException while connecting Cassandra cluster

I am doing a PoC to connect Cassandra from my java8 application code. I am using apache Cassandra with java8 To start with I looked and started with https://github.com/lankydan/datastax-java-driver Trying to connect my Cassandra cluster when i…
BdEngineer
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Datastax CassandraRoleManager skipped default role setup some nodes were not ready

I have upgraded DSE cluster with 2 nodes from 5.0.7 to 6.7.3. After upgrade with nodetool status shows both nodes are "UP NORMAL" with apprx 75 GB load on each and cluster works for applications with read write. but getting error during Nodetool…
SLU
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Changing the compaction strategy while upgrading the cassandra major version

I am planning to upgrade cassandra version from 2.2 to 3.11. At the same time I want to change the existing table compaction strategy from SizeTieredCompactionStrategy to TimeWindow. I want to automate these two tasks. How do I change the compaction…
Mac
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Cassandra throwing NoHostAvailableException

I am having 3 node cluster with replication factor 2 and one of my Cassandra node was down and I started receiving following exception in my java service in org.springframework.cassandra.support.exception.CassandraConnectionFailureException: All…
Varun Kapoor
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Application job submission with out duplication

We are using DataStax Spark 6.0. We are submitting jobs using crontab to run every 5 mins. We wrote script to find if it is running to avoid duplicate submission of same application. Is there a way to stop job submission or keep job in Queue in…
Hyder Tom
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Multiple OR frange in DSE Solr

I have to dates, originalArrivalEta and realArrivalEta, and I would like to do a Solr search based on the difference between these dates. The main problem is that my time range is not continuous, it is spliced. So, for example, I want a range…
Random
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Offline compaction/merging of multiple SSTables into one

$ cd /tmp $ cp -r /var/lib/cassandra/data/keyspace/table-6e9e81a0808811e9ace14f79cedcfbc4 . $ nodetool compact --user-defined table-6e9e81a0808811e9ace14f79cedcfbc4/*-Data.db I expected the two SSTables (where the second one contains only…
Alexander Shukaev
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major compaction on LCS

I have table with LCS in Cassandra cluster. I am observing too may tombstones in my cluster so I have decided to reduce GC grace seconds and performing major compaction. Ran nodetoolcompact keyspace table but compaction job ran within a second. it…
LetsNoSQL
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