datastax

问题 I am using DSE5.0.2 version and Solr ( integrated with dse) . I have to do relevance search using solr on the below tables/ data . I have a table in cassandra on which we have created a solr core - CREATE TABLE fullsearch ( launchedtime bigint, hashtag text, solr_query text, PRIMARY KEY (launchedtime)) Now we have created a solr core and searching on the field hashtag . but i want those result which contains max no of hashtag i am searching . for ex : - if data in cassandra is - launchedtime

问题 Using OpsCenter 5.1.0 and trying to add S3 as a location for snapshot backups. What are the necessary permissions in AWS IAM for the opscenter user? So far, I have the following policy: "Statement": [ { "Effect": "Allow", "Action": [ "s3:ListAllMyBuckets", "s3:GetBucketLocation" ], "Resource": "arn:aws:s3:::*" }, { "Effect": "Allow", "Action": [ "s3:ListBucket", "s3:GetBucketLocation" ], "Resource": [ "arn:aws:s3:::cassandra-bkup" ] }, { "Effect": "Allow", "Action": [ "s3:DeleteObject", "s3

问题 I created an Apache Cassandra 2.1.2 cluster of 50 nodes. I named the cluster as "Test Cluster", the default. Then for some testing, I separated one node out of the 50 node cluster. I shut down Cassandra, deleted data dirs, flushed nodetool. Then I edited the single node cluster and called it as "Single Node Test Cluster" I edited seeds, cluster_name and listen_address fields appropriately. I also setup JMX correctly. Now here is what happens. 1. When I run nodetool status on the single node,

问题 https://stackoverflow.com/a/47837940/260805 hints that it should be possible. I would like to disable it for a longer period of times (~2 days) when enabling incremental repairs. 回答1: (Disclaimer: I'm a ScyllaDB employee) As far as I know you can disable autocompaction in the following ways: For a column family (Table), by setting its strategy to NullCompactionStrategy. (I think this one is supported only in Scylla, but not in Cassandra) Using nodetool: $ nodetool <options>

问题 As per cassandra-env.sh the default heap memory allocation for a 440G Total RAM should be 32765M (Maximum CAP before JVM Swithches to 64 bit reference). So, why is it showing 32210157568 bytes(30718M) when I query "java -XX:+PrintCommandLineFlags -version" or "java -XX:+PrintFlagsFinal -version | grep -iE 'MaxHeapSize'" Why is there difference, of around 2G. FYI: jvm.options files was default & using DSE 5.1.3. 回答1: java -XX:+PrintFlagsFinal has nothing to do with Cassandra, and I don't know

问题 It seems that the unique id for vertices is community_id in DSE Graph. I have found that this works (id is long) : v = g.V().has("VertexLabel","community_id",id).next() none of those work: v = g.V("community_id",id).next() v = g.V("community_id","VertexLabel:"+id).next() v = g.V(id).next() v = g.V().hasId(id).next() v = g.V().hasId("VertexLabel:"+id).next() v = g.V("VertexLabel:"+id).next() Edit After some investigation I found that for a vertex v, v.id() returns a LinkedHashMap: Vertex v =

问题 I have three node dse Cassandra cluster. One node is search enabled, Two node is graph enabled. When I run APIs(which is coded in scala play framework), POST or GET request keeps going and going it does gives a response. There is no any information in logs of Cassandra it is working normally. Earlier i used to use single node cluster where is graph enabled. 回答1: You need to have same workload on all nodes of the same data center, so you need to enable both graph and search on all nodes. 来源：

问题 Good day, everyone. Usually I just using this Official Docs in *nix OS But now i'm using MacOs and this instructions just doesn't work properly. In case of pecl install cassandra I got this message: checking for supported DataStax C/C++ driver version... awk: can't open file /include/cassandra.h source line number 1 configure: error: not supported. Driver version 2.4.2+ required (found ) ERROR: `/private/tmp/pear/install/cassandra/configure --with-php-config=/usr/bin/php-config' failed My

问题 I have enabled ssl encryption in my cassandra node and I am trying to figure out how to connect to my node using cqlsh with ssl: When I run ./cqlsh --ssl I get the following error: Validation is enabled; SSL transport factory requires a valid certfile to be specified. Please provide path to the certfile in [ssl] section as 'certfile' option in /root/.cassandra/cqlshrc (or use [certfiles] section) or set SSL_CERTFILE environment variable. I followed the link on https://docs.datastax.com/en

问题 I have enabled ssl encryption in my cassandra node and I am trying to figure out how to connect to my node using cqlsh with ssl: When I run ./cqlsh --ssl I get the following error: Validation is enabled; SSL transport factory requires a valid certfile to be specified. Please provide path to the certfile in [ssl] section as 'certfile' option in /root/.cassandra/cqlshrc (or use [certfiles] section) or set SSL_CERTFILE environment variable. I followed the link on https://docs.datastax.com/en