datastax-enterprise Questions
3
I'm trying to start DSE 5.0.1 Cassandra (single node) on my local.
I'm getting the following error:
CassandraDaemon.java:698 - Cannot start node if snitch's data center
(Cassandra) differs from pr...
Potent asked 15/8, 2016 at 19:14
6
Solved
So far, I haven't found a place on Datastax documentation website that sums this up. Can I easily check the version some other way on a server?
Sporophore asked 7/1, 2015 at 14:12
7
Solved
I am wondering how can I achieve pagination using Cassandra.
Let us say that I have a blog. The blog lists max 10 posts per page. To access next posts a user must click on pagination menu to acces...
Troublous asked 5/11, 2014 at 12:31
1
Solved
To enhance read performance, I try to have fewer underlying SSTables with LCS, so I set sstable_size_in_mb to 1280MB as suggested by some articles, which pointed out that the 160MB default value wa...
Savagery asked 15/5, 2019 at 9:40
4
Solved
I'm trying to install cassandra-driver using python(on windows) but it fails with following exception. could someone please help me on this,
I have also tried the manual installation process menti...
Tarbes asked 12/5, 2017 at 22:24
4
I’m trying to use the cassandra-stress tool for the first time today. Although I'm able to run the tool, a lot of "Failed to connect over JMX; not collecting these stats" messages are displayed in ...
Chinchin asked 29/3, 2015 at 13:46
3
Solved
Requirement is simple: we have to create a table which will have only 24 hours of data.
We have two options
Defile TTL with each insert
Make table property default_time_to_live for 24 hours.
...
Destrier asked 27/4, 2018 at 5:13
3
Solved
I have two procesess each process do
1) connect oracle db read a specific table
2) form dataframe and process it.
3) save the df to cassandra.
If I am running both process parallelly , both try t...
Hermitage asked 26/10, 2018 at 14:48
3
I am trying to query Cassandra using Apache Drill. The only connector I could find is here:
http://www.confusedcoders.com/bigdata/apache-drill/sql-on-cassandra-querying-cassandra-via-apache-drill
...
Todhunter asked 24/6, 2015 at 4:40
1
Solved
I would like to use solr_query to find results which field of map type contains given key-value pair.
I'm trying to create a query similar to this:
SELECT * FROM my_table WHERE pathId= 5 AND sol...
Clarkin asked 7/9, 2019 at 20:42
2
We had DataStax Cassandra Community Server 3.0.2 installed on our boxes, got couple of keyspaces created and we migrated some data from our old DB to Cassandra (Aroudnd 10GB of data). While, that w...
Scleritis asked 17/3, 2016 at 3:7
2
Solved
DataStax cassandra core java drive is having a transitive dependencies on guava-19 (including latest DataStax) which is having a security vulnerable (CVE-2018-10237).
To fix this when I tried exc...
Shofar asked 14/3, 2019 at 6:2
2
Solved
I am able to see 160 Native clients on a particular node from OpsCenter.
But none of the application is pointing to this DC or any of the nodes from this DC.
If above is the situtation what are th...
Carpal asked 16/1, 2019 at 7:55
2
Solved
I am selecting all records from cassandra nodes based on token range of my partition key.
Below is the code:
public static synchronized List<Object[]> getTokenRanges(
final Session sessio...
Maurizio asked 9/1, 2019 at 6:31
1
I am trying to store some strings of a dataframe in cassandra table.
I tried with cassandra table columns defining as float/double/decimal.
But every type only storing 2 precision , i.e. 8.00005 a...
Melchor asked 21/12, 2018 at 13:4
1
Solved
I have following method to write into cassandra some time it saving data fine.
When I run it again , sometimes it is throwing NullPointerException
Not sure what is going wrong here ... Can you pl...
Wandering asked 29/10, 2018 at 9:36
4
Solved
cassandra cql shell window got disappears after installation in windows?
this was installed using MSI installer availalbe in planet cassandra.
Why this happens ? please help me..
Thanks in advanc...
Bibliophage asked 6/10, 2016 at 10:8
1
If I have a multi-DC cluster, DC1 and DC2, where DC2 is only used for failover. And in the driver on the client side, I define the contact points using the domain names (foo1.net, foo2.net, and foo...
Chaffinch asked 19/7, 2018 at 23:46
3
Solved
I want to remove records from Cassandra cluster after a particular time.
So what Should I use TTL or manually delete?
Erna asked 4/6, 2018 at 8:9
2
Solved
I read this from the official DSE doc but it did not go in depth in to how. Can someone explain or provide any links to how?
Sterile asked 17/5, 2018 at 21:46
2
Unexpected errors in the Cassandra logs, haven't been able to trace down the underlaying cause yet. What component utilise Netty, or is this problem well known? (couldn't find any info)
INFO [Sha...
Hanni asked 20/5, 2016 at 9:15
2
Solved
From two different links of the Cassandra's documentation, I found:
link 1
A structure stored in memory that checks if row data exists in the memtable before accessing SSTables on disk
and
...
Briticism asked 5/9, 2016 at 9:20
3
Solved
I am trying to run the following query
SELECT edge_id, b_id FROM booking_by_edge WHERE edge_id IN ?
I bind Java list of Long's as a parameter and I get an exception
SyntaxError: line 0:-1 mism...
Begrime asked 4/6, 2013 at 13:14
1
Solved
We have vertex which will store various jobs and their types and counts as properties. I have to group by the status and their counts. I tried the following query which works for one property(recei...
Intuitive asked 14/7, 2017 at 5:0
1
I'm using datastax enterprise 5.0.2 and I want to use solr
I try this :
dsetool create_core keyspace.table generateResources=true reindex=true
But I get this :
org.apache.solr.client.solrj.i...
Course asked 16/8, 2016 at 19:49
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