Cassandra启动问题

时间：2011-08-30 18:06:34

标签： cassandra restart hector

首先，我读了这个this。

我无法让Cassandra重新开始运行。 我使用Hector作为我的客户端连接到Cassandra 0.8.2＆amp;的一个实例。加载我的架构。通过Hector，我使用2个不同的类来创建2个不同的列族 - 文章和TagsArticlesCF。

通过主类，我创建了一个名为“Articles”和“TagsArticlesCF”的列族，如下所示：

public static void main(String[] args) {
    cluster = HFactory.getOrCreateCluster("test cluster", "xxx.xxx.xxx.xxx:9160");
    newKeyspaceDef = HFactory.createKeyspaceDefinition(keyspaceName);
    if( (cluster.describeKeyspace(keyspaceName)) == null){
        createSchema();
    }


    Keyspace ksp = HFactory.createKeyspace(keyspaceName, cluster);
    Articles art = new Articles(cluster, newKeyspaceDef,ksp);
TagsArticlesCF tags = new TagsArticlesCF(cluster,newKeyspaceDef,ksp);

以下是我的列族的外观/创建方式示例：

public Articles(Cluster cluster, KeyspaceDefinition ksp, Keyspace ksp2)  {
BasicColumnFamilyDefinition bcfDef = new BasicColumnFamilyDefinition();
        bcfDef.setName("Articles");
        bcfDef.setKeyspaceName("test3");
        bcfDef.setDefaultValidationClass(ComparatorType.UTF8TYPE.getClassName());
        bcfDef.setKeyValidationClass(ComparatorType.UTF8TYPE.getClassName());
        bcfDef.setComparatorType(ComparatorType.UTF8TYPE);

        ColumnFamilyDefinition cfDef = new ThriftCfDef(bcfDef);
        BasicColumnDefinition columnDefinition = new BasicColumnDefinition();
        columnDefinition.setName(StringSerializer.get().toByteBuffer("title"));
        columnDefinition.setIndexType(ColumnIndexType.KEYS);
        columnDefinition.setValidationClass(ComparatorType.UTF8TYPE.getClassName());
        cfDef.addColumnDefinition(columnDefinition);
...

我正在尝试向Cassandra添加一个完整的架构，它将支持我计划在加载的数据上执行的查询。我运行了几次main方法，将新的列族加载到数据库中。在运行main方法几次并调整一些事情（检查列族是否已经在KeyspaceDefinition中）之后，Cassandra的运行实例出现了问题。

我对使用Hector / java的一些事情感到好奇：

  1. 我打算让10个左右的列系列具有不同的列（以支持不同的查询）。最好的做法是组织我的课程，以便为每个列系列创建一个类吗？

  2. KeyspaceDefinition＆amp;一个Keyspace？为什么要做出区分？

    3. 我们试图获得一个新的Cassandra＆amp; amp;这是我们遇到的。我正在努力更好地了解正在发生的事情，因此，我们将非常感谢任何评论和帮助以避免这些类型的错误：

    [root@appscluster1 bin]# ./cassandra -p cassandra.pid
[root@appscluster1 bin]#  INFO 10:52:36,437 Logging initialized
 INFO 10:52:36,484 JVM vendor/version: Java HotSpot(TM) 64-Bit Server VM/1.6.0_25
 INFO 10:52:36,485 Heap size: 1046937600/1046937600
 INFO 10:52:36,490 JNA not found. Native methods will be disabled.
 INFO 10:52:36,526 Loading settings from file:/opt/cassandra/apache-cassandra-0.8.2/conf/cassandra.yaml

[root@appscluster1 bin]#  INFO 10:52:36,872 DiskAccessMode 'auto' determined to be mmap, indexAccessMode is mmap
 INFO 10:52:37,346 Global memtable threshold is enabled at 332MB
 INFO 10:52:37,348 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:37,497 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:37,617 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:37,984 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:38,252 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:38,259 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:38,545 Opening /opt/cassandra/persist8/data/system/IndexInfo-g-73
 INFO 10:52:38,661 Opening /opt/cassandra/persist8/data/system/Schema-g-169
 INFO 10:52:38,685 Opening /opt/cassandra/persist8/data/system/Schema-g-170
 INFO 10:52:38,730 Opening /opt/cassandra/persist8/data/system/Schema-g-171
 INFO 10:52:38,751 Opening /opt/cassandra/persist8/data/system/Migrations-g-171
 INFO 10:52:38,763 Opening /opt/cassandra/persist8/data/system/Migrations-g-170
 INFO 10:52:38,776 Opening /opt/cassandra/persist8/data/system/Migrations-g-169
 INFO 10:52:38,795 Opening /opt/cassandra/persist8/data/system/LocationInfo-g-2
 INFO 10:52:38,827 Opening /opt/cassandra/persist8/data/system/LocationInfo-g-1
 INFO 10:52:39,048 Loading schema version ec437ac0-d28a-11e0-0000-c4ffed3367ff
 INFO 10:52:39,645 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:39,663 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)

    ...（更多相同）...... 

     INFO 10:52:40,463 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:41,390 Opening /opt/cassandra/persist8/data/test3/Articles-g-367
ERROR 10:52:41,392 Missing sstable component in /opt/cassandra/persist8/data/test3/Articles-g-367=[Index.db, Data.db]; skipped because of /opt/cassandra/persist8/data/test3/Articles-g-367-Index.db (No such file or directory)
 INFO 10:52:41,863 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
 INFO 10:52:41,865 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)

    ...（更多相同）...... 

     INFO 10:52:41,892 Removing compacted SSTable files (see http://wiki.apache.org/cassandra/MemtableSSTable)
ERROR 10:52:41,898 Exception encountered during startup.
java.lang.RuntimeException: javax.management.InstanceAlreadyExistsException: org.apache.cassandra.db:type=ColumnFamilies,keyspace=test3,columnfamily=TagsArticlesCF
       at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:315)
       at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:466)
       at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:436)
       at org.apache.cassandra.db.Table.initCf(Table.java:369)
       at org.apache.cassandra.db.Table.<init>(Table.java:306)
       at org.apache.cassandra.db.Table.open(Table.java:111)
       at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:187)
       at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:341)
       at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:80)
Caused by: javax.management.InstanceAlreadyExistsException: org.apache.cassandra.db:type=ColumnFamilies,keyspace=test3,columnfamily=TagsArticlesCF
       at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:453)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1484)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:963)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:917)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:312)
       at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
       at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:311)
       ... 8 more
Exception encountered during startup.
java.lang.RuntimeException: javax.management.InstanceAlreadyExistsException: org.apache.cassandra.db:type=ColumnFamilies,keyspace=test3,columnfamily=TagsArticlesCF
       at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:315)
       at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:466)
       at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:436)
       at org.apache.cassandra.db.Table.initCf(Table.java:369)
       at org.apache.cassandra.db.Table.<init>(Table.java:306)
       at org.apache.cassandra.db.Table.open(Table.java:111)
       at org.apache.cassandra.service.AbstractCassandraDaemon.setup(AbstractCassandraDaemon.java:187)
       at org.apache.cassandra.service.AbstractCassandraDaemon.activate(AbstractCassandraDaemon.java:341)
       at org.apache.cassandra.thrift.CassandraDaemon.main(CassandraDaemon.java:80)
Caused by: javax.management.InstanceAlreadyExistsException: org.apache.cassandra.db:type=ColumnFamilies,keyspace=test3,columnfamily=TagsArticlesCF
       at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:453)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.internal_addObject(DefaultMBeanServerInterceptor.java:1484)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:963)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:917)
       at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:312)
       at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:482)
       at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:311)
       ... 8 more

[root@appscluster1 bin]#

    谢谢！

1 个答案:

答案 0 :(得分：3)

您如何将Keyspace定义发送到群集？

看一下测试用例之后的方法： https://github.com/rantav/hector/blob/master/core/src/test/java/me/prettyprint/cassandra/service/CassandraClusterTest.java#L115-189

如果键空间和/或列族已存在，则应该能够捕获IllegalArgumentException。

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