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Questions tagged [datastax-startup]

DataStax Enterprise is big data platform consisting of open source tools such as Apache Cassandra, Solr, Spark, Tinkerpop and more.

184 questions
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Cassandra Error message: Not marking nodes down due to local pause. Why?

I have 6 nodes, 1 Solr, 5 Spark nodes, using datastax. My cluster is on a similar server to Amazon EC2, with EBS volume. Each node has 3 EBS volumes, which compose a logical data disk using LVM. In my OPS center the same node frequently becomes…
peter
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Delete whole partition from Cassandra without tombstones and ttl?

Is it possible to delete a whole partition from Cassandra table, without writing tombstones and waiting from gc_grace_period and running compaction?
rajat
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DataStax DevCenter stuck on Startup

I just installed DataStax DevCenter. However when loading up, the Automatic Update & Usage page pops up. However the "Ok" button is disabled and unclickable. So I can't get pass the startup loading of the application. How can I bypass this? Click…
chubbychu
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How to start Spark Thrift Server on Datastax Enterprise (fails with java.lang.NoSuchMethodError: ...LogDivertAppender.setWriter)?

When I am trying to run datastax spark-sql-thriftserver, I am getting these errors: dse spark-sql-thriftserver start \ --conf spark.cores.max=10 \ --conf spark.executor.memory=2g \ --hiveconf hive.server2.thrift.port=10001 Spark Command:…
rajat
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Django: UUID type in {% url } tag

Intro I am following the Django tutorial. In contrast to it I have two databases - MySql and Cassandra. Therefore, I need to use also the Cassandra models which contain the UUID types. Thee UUID has the form of 32 alphanumeric characters and four…
karelok
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Cassandra nodes cannot communicate with each other, cause ReadTimeout

This is on Datastax Cassandra (dse) version: 4.8.5-1 This corresponds (I believe) to Cassandra: 2.1.x I'm getting a lot of the following errors when querying from our application: ReadTimeout: code=1200 [Coordinator node timed out waiting for…
c4urself
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High disk I/O on Cassandra nodes

Setup: We have 3 nodes Cassandra cluster having data of around 850G on each node, we have LVM setup for Cassandra data directory (currently consisting 3 drives 800G + 100G + 100G) and have separate volume (non LVM) for…
Fawad
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Why does a traversal that filters on partition key need a full-table scan?

I'm investigating a possible bug with partition scans using custom vertex IDs in DSE Graph. For some reason, selecting a vertex by its full ID works as expected, but retrieving the whole partition results in a full table scan (i.e. graph scan…
AliOli
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Drop column(s) on a table that has a materialized view

It seems that it's not possible to drop a column from a table when there is a defined materialized view on this table. For example, let's assume that we have this table: > CREATE TABLE healthera.users ( > user_id timeuuid PRIMARY KEY, > address…
Stavros Zavrakas
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How do I disable incremental repair?

I have a cluster which I am considering enabling incremental repair on. If anything goes wrong I'd like to disable incremental repair on every node. How do I do that?
Ztyx
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Strange exception in /var/log/cassandra/system.log

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 [SharedPool-Worker-1] 2016-05-18 13:47:41,004 …
parek
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4
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Cassandra avoid JOINING state go to RUNNING

I've got a few nodes in a ring with replication 3 and trying to change the hardware on the node. What's happening is that I'm getting a streaming failure exception. I've tried a few times always with the same failure. The upstream node (10.0.10.54)…
koblas
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Can't add a new Cassandra datacenter due to streaming errors

Using DSE 4.8.6 (C* 2.1.13.1218) When I try adding a new node in a new datacenter, bootstraping / node rebuild is always interrupted by streaming errors. Error example from system.log: ERROR [STREAM-IN-/172.31.47.213] 2016-04-19 12:30:28,531 …
Vincent de Lagabbe
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Spark + Cassandra on EMR LinkageError

I have Spark 1.6 deployed on EMR 4.4.0 I am connecting to datastax cassandra 2.2.5 deployed on EC2. The connection works to save data into cassandra using spark-connector 1.4.2_s2.10 (Since it has guava 14) However reading data from cassandra fails…
lazywiz
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Issue with DataStax graph loader edge loading with property key

DSE VERSION 6.7 and DSE graph loader version 6.7 We have two vertex name "x" and "y" and there is connecting edges named "z" between for x to y. That edge has property also. So wee needs to load that also. And properties data types are Txt(string)…
Mukul Lohar
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