cassandra

问题 [root@SudeepMangu bin]# ./cassandra -f xss = -ea -javaagent:/home/sudeep/apache-cassandra-1.2.5-src/lib/jamm-0.2.5.jar -XX:+UseThreadPriorities -XX:ThreadPriorityPolicy=42 -Xms930M -Xmx930M -Xmn200M -XX:+HeapDumpOnOutOfMemoryError -Xss160k Exception in thread "main" java.lang.NoClassDefFoundError: * org/apache/cassandra/service/CassandraDaemon * Caused by: java.lang.ClassNotFoundException: org.apache.cassandra.service.CassandraDaemon at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

问题 Im trying to make Cassandra run with PHP on Windows 7 at the moment. I installed cassandra and thrift... When I call the cassandra-test.php, I get the following error: ( ! ) Fatal error: Call to undefined method CassandraClient::batch_insert() in C:\xampp\htdocs\YiiPlayground\cassandra-test.php on line 75 Call Stack # Time Memory Function Location 1 0.0014 337552 {main}( ) ..\cassandra-test.php:0 2 0.0138 776232 CassandraDB->InsertRecord( ) ..\cassandra-test.php:304 The cassandra-test.php

问题 Im trying to make Cassandra run with PHP on Windows 7 at the moment. I installed cassandra and thrift... When I call the cassandra-test.php, I get the following error: ( ! ) Fatal error: Call to undefined method CassandraClient::batch_insert() in C:\xampp\htdocs\YiiPlayground\cassandra-test.php on line 75 Call Stack # Time Memory Function Location 1 0.0014 337552 {main}( ) ..\cassandra-test.php:0 2 0.0138 776232 CassandraDB->InsertRecord( ) ..\cassandra-test.php:304 The cassandra-test.php

问题 This is my Database Structure CREATE TABLE stack ( id UUID, entrytime TIMESTAMP, name TEXT, PRIMARY KEY (id, entrytime) ) WITH CLUSTERING ORDER BY ( entrytime DESC ); And when I use the Insert statement as. INSERT INTO stack ( id, entrytime, name ) VALUES ( now(), toTimestamp( now() ), 'Nik' ); But it stores the entry time column as 2018-01-15 08:29:58.174000+0000 I want to remove the extra precision that Cassandra provides. I know this has to do something with the cqlshrc.sample file but I

问题 This is the schema I use: CREATE TABLE playerInfo ( key text, column1 bigint, column2 bigint, column3 bigint, column4 bigint, column5 text, value bigint, PRIMARY KEY (key, column1, column2, column3, column4, column5) ) WITH COMPACT STORAGE AND bloom_filter_fp_chance=0.010000 AND caching='KEYS_ONLY' AND comment='' AND dclocal_read_repair_chance=0.000000 AND gc_grace_seconds=864000 AND read_repair_chance=0.100000 AND replicate_on_write='true' AND populate_io_cache_on_flush='false' AND

问题 I am working on Datastax Cassandra with Apache Solr for multiple partial search. Issue is, everytime I am getting only 10 rows even once I am doing count(*) query, I am able to check there are 1300 rows belong to particular query. nandan@cqlsh:testo> select id from empo where solr_query = 'isd:9*'; id -------------------------------------- 5ee5fca6-6f48-11e6-8b77-86f30ca893d3 27e3e3bc-6f48-11e6-8b77-86f30ca893d3 f3156e76-6f47-11e6-8b77-86f30ca893d3 f315ac74-6f47-11e6-8b77-86f30ca893d3

问题 I have few questions regarding the digest request, I read through the docs and the following informations are not up to the point, 1) Lets say I have 10 node cluster with the RF =3 and RC = 2, Also for understanding let the Replicas be Node 1, Node 2 and Node 3 and Coordinator be Node 4. For the read request, As per my understanding first coordinator (Node 4) sends the direct request to one of the node with the lower latency (Dynamic snitch) say Node 1 and gets the data, then after receiving

问题 can someone point to me how a field declared list<frozen<list<int>>> can be mapped back into java in spring-data-cassandra. I'm able to simply save data through List<List<Integer>>> but doesn't work when reading from the database, a codec not found exception pops. Help is much appreciated. 回答1: Your Declaration is correct. But for nested collection read you need to create Custom RowMapper to convert row to DTO. Example : Let's we have the table ctest CREATE TABLE ctest ( id int PRIMARY KEY,

问题 can someone point to me how a field declared list<frozen<list<int>>> can be mapped back into java in spring-data-cassandra. I'm able to simply save data through List<List<Integer>>> but doesn't work when reading from the database, a codec not found exception pops. Help is much appreciated. 回答1: Your Declaration is correct. But for nested collection read you need to create Custom RowMapper to convert row to DTO. Example : Let's we have the table ctest CREATE TABLE ctest ( id int PRIMARY KEY,

问题 Hi I am new to word Docker and Cassandar. I have a problem connecting to Cassandra in Docker from my computer. I run container Cassandra and I see that exposed ips and ports are 192.168.99.100:9042.(first image) In docker I can even see that "Test cluster" is running but when I want to connect to Cassandra by NoSQL Manager for Cassandra there is always error message "None of the hosts tried for query are available". Thank you. 回答1: you don't expose a port. 9042 is docker port. When you run