RE: auto_bootstrap=false broken?

I had problems with write_survey. I opened a bug : https://issues.apache.org/jira/browse/CASSANDRA-9934 De : horschi [mailto:hors...@gmail.com] Envoyé : mardi 4 août 2015 15:20 À : user@cassandra.apache.org Objet : Re: auto_bootstrap=false broken? Hi Paulo, thanks for your feedback, but I

RE: problem with write_survey

Do you see this log message? logger.infohttp://logger.info(Startup complete, but write survey mode is active, not becoming an active ring member. Use JMX (StorageService-joinRing()) to finalize ring joining.); ð Yes ! Log : INFO [main] 2015-07-29 15:29:35,697 StorageService.java (line

problem with write_survey

Hello, I start a node with the write survey = true -Dcassandra.write_survey=true Log: INFO [main] 2015-07-29 15:29:35,697 StorageService.java (line 853) Startup complete, but write survey mode is active, not becoming an active ring member. Use JMX (StorageService-joinRing()) to finalize ring

RE: Replication Factor Change

Hello, If current CL = ONE, Be careful on production at the time of change replication factor, 3 nodes will be queried while data is being transformed ==> So data read errors! De : Yulian Oifa [mailto:oifa.yul...@gmail.com] Envoyé : jeudi 5 novembre 2015 16:02 À : user@cassandra.apache.org

RE: management and monitoring nodetool repair

Thx Carlos, How can I get information on error during repair ? Thx. De : Carlos Alonso [mailto:i...@mrcalonso.com] Envoyé : lundi 19 octobre 2015 11:09 À : user@cassandra.apache.org Objet : Re: management and monitoring nodetool repair So repair process has two phases: First one is all about

management and monitoring nodetool repair

Hi, I'm looking for a tool for management and monitoring of the status of nodetool repair. Currently I am trying to test cassandra-reaper, but if you tested other tools thank you to share. Thanks

cassandra-stress 2.1: Generating data

Hi, I'm trying to insert data with Cassandra-stress into cluster C* with 6 nodes: node001006 The stress-tool is executed on a different machine (gen01) specifying one of 6 nodes: tools/bin/cassandra-stress user profile=cf.yml ops\(insert=1\) n=500 -mode thrift -node node001 -rate

Compaction And Write performance

Hi all, Does compaction throughput impact write performance ? Increasing the value of compaction_throughput_mb_per_sec can improve the insert data ? If yes, is it possible to explain to me the concept ? Thanks.

RE: Cassandra data modeling for a social network

Hello, > First, Is this data modeling correct for follow base (follower, following actions) social network? For social network, I advise you to see Graph Databases, over Cassandra Example : https://academy.datastax.com/resources/getting-started-graph-databases De : Mohammad Kermani

Atomic Batch: Maintaining consistency between tables

Hello, I read in the documentation DataStax : "The coordinator node might also need to work hard to process a logged batch while maintaining consistency between tables" It means that the coordinator send the mutations to all replica nodes and waits for RF acknowledgements ? or only one node

RE: Modeling nested collection with C* 2.0

I need to query all columns by the userid. For example: Select * from users where userid = 123; frozen UDT don’t exist in Cassandra 2.0 ☹ De : Jack Krupansky [mailto:jack.krupan...@gmail.com] Envoyé : jeudi 28 janvier 2016 16:38 À : user@cassandra.apache.org Objet : Re: Modeling nested

RE: [C*2.1]memtable_allocation_type: offheap_objects

Thank you ! Another question please : In the blog post (http://www.datastax.com/dev/blog/off-heap-memtables-in-Cassandra-2-1), it is noted that offheap_objects it effective for small values like ints or uuids as well. offheap_buffers for the tables with string or blobs. in my case, the tables

C*2.1 using timestamp with same timestamp

Hello, I try to insert two lines for the same partition with the same timestamp. prmiere the line without TTL. the 2nd line with TTL. As shown in the example below: INSERT INTO tab1 (a,b) VALUES ('YYY','') USING TIMESTAMP 1460088862025940 INSERT INTO tab1 (a,b) VALUES ('YYY','') USING

[C*2.1]memtable_allocation_type: offheap_objects

Hi, offheap_objects was removed in releases 3.2.x then reintroduced in release 3.4: I vould like to know if someone has used offheap_objects in Cassandra 2.1: stable or not, improvement observed or not... Thanks. Ahmed

RE: Migration from 2.0.10 to 2.1.12

full is a reserved word in apache Cassandra / cql 3.1 https://cassandra.apache.org/doc/cql3/CQL.html#appendixA *Reserved keywords cannot be used as identifier , they are truly reserved for the language (but one can enclose a reserved keyword by double-quotes to use it as an identifier) De :

[C* 2.1.14] Not enough bytes exception during compaction

Hi, We recently got an exception during compaction on some nodes (Cassandra 2.1.14): ERROR [CompactionExecutor:14065] 2016-12-30 14:45:07,245 CassandraDaemon.java:229 - Exception in thread Thread[CompactionExecutor:14065,1,main] java.lang.IllegalArgumentException: Not enough bytes. Offset: