卡桑德拉中的大容量加载错误

Question

早上好,

我正在尝试使用批量加载(http://www.datastax.com/dev/blog/bulk-loading)作为指南来实现海量数据转储cassandra示例。

在本例中，使用脚本(http://www.datastax.com/wp-content/uploads/2011/08/DataImport)解决依赖关系，但我发现需要由cassandra库覆盖的依赖项不在这里列出的目录中，因为我使用的是使用Cassandra2.0的dse版本。然后，尝试覆盖这些依赖项，得到以下脚本。

#!/bin/sh

# paths to the cassandra source tree, cassandra jar and java

CASSANDRA_HOME="/usr/share/dse/cassandra"
# CASSANDRA_JAR="./apache-cassandra-2.0.10.jar"
JAVA=`which java`

# Java classpath. Must include:
#   - directory of DataImportExample
#   - directory with cassandra/log4j config files
#   - cassandra jar
#   - cassandra depencies jar
CLASSPATH=".:/usr/share/dse/dse.jar:./slf4j-1.7.7/slf4-nop-1.7.7.jar:./slf4j-1.7.7/slf4j-simple-1.7.7.jar:/etc/dse/cassandra"

for jar in $CASSANDRA_HOME/lib/*.jar; do
    CLASSPATH=$CLASSPATH:$jar
done

$JAVA -ea -cp $CLASSPATH -Xmx256M \
        -Dlog4j.configuration=log4j-tools.properties \
        CassandraDataBulk "$@"

• 对CASSANDRA_JAR进行了注释，我使用“CASSANDRA_JAR 2.0.8.39.jar”位于文件夹"/ usr / share / dse / cassandra / lib“中，并且已经包括在内。
• 我解决了1.7.7版本中下载slf4j依赖项的问题。

由于卡桑德拉版本的不同，我也不得不习惯于SSTableSimpleUnsortedWriter构建器。

IPartitioner partitioner = new RandomPartitioner();

        SSTableSimpleUnsortedWriter sourcesWriter = new SSTableSimpleUnsortedWriter(
                directory,
                partitioner,
                keyspace,
                table,
                AsciiType.instance, 
                null, 
                64
        );

现在的问题似乎是仍然存在依赖关系。在下面，我得到的跟踪误差。

这里存在依赖关系，但作为"org.apache.commons.configuration.ConfigurationRuntimeException“，真正的问题可能是另一个问题，可能有一个糟糕的配置"cassandra.yaml"？

谢谢，打招呼！

[dmdb@vm-dmdb01 ~]$ ./init_env.sh export.csv 
[main] ERROR org.apache.cassandra.cql3.QueryProcessor - Unable to initialize MemoryMeter (jamm not specified as javaagent).  This means Cassandra will be unable to measure object sizes accurately and may consequently OOM.
[main] INFO org.apache.cassandra.config.YamlConfigurationLoader - Loading settings from file:/etc/dse/cassandra/cassandra.yaml
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - Data files directories: [/data01, /data02]
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - Commit log directory: /datatmp/commitlog
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - DiskAccessMode 'auto' determined to be mmap, indexAccessMode is mmap
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - disk_failure_policy is stop
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - commit_failure_policy is stop
[main] INFO org.apache.cassandra.config.DatabaseDescriptor - Global memtable threshold is enabled at 61MB
[main] INFO com.datastax.bdp.snitch.Workload - Setting my workload to Cassandra
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/configuration/ConfigurationRuntimeException
    at com.datastax.bdp.config.ConfigUtil.defaultValue(ConfigUtil.java:18)
    at com.datastax.bdp.config.DseConfig.<clinit>(DseConfig.java:51)
    at com.datastax.bdp.snitch.DseDelegateSnitch.<init>(DseDelegateSnitch.java:42)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at java.lang.Class.newInstance(Class.java:374)
    at org.apache.cassandra.utils.FBUtilities.construct(FBUtilities.java:488)
    at org.apache.cassandra.config.DatabaseDescriptor.createEndpointSnitch(DatabaseDescriptor.java:508)
    at org.apache.cassandra.config.DatabaseDescriptor.applyConfig(DatabaseDescriptor.java:341)
    at org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:111)
    at org.apache.cassandra.io.sstable.AbstractSSTableSimpleWriter.<init>(AbstractSSTableSimpleWriter.java:50)
    at org.apache.cassandra.io.sstable.SSTableSimpleUnsortedWriter.<init>(SSTableSimpleUnsortedWriter.java:96)
    at org.apache.cassandra.io.sstable.SSTableSimpleUnsortedWriter.<init>(SSTableSimpleUnsortedWriter.java:80)
    at org.apache.cassandra.io.sstable.SSTableSimpleUnsortedWriter.<init>(SSTableSimpleUnsortedWriter.java:91)
    at CassandraDataBulk.main(CassandraDataBulk.java:35)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.configuration.ConfigurationRuntimeException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 17 more

Answer 1

在java调用中缺少一个"javaagent“参数。增加以下内容：

-javaagent:$CASSANDRA_HOME/lib/jamm-0.2.5.jar

您的最终决定应该如下所示：

$JAVA -ea -cp $CLASSPATH -Xmx256M \
       -Dlog4j.configuration=log4j-tools.properties \
       -javaagent:$CASSANDRA_HOME/lib/jamm-0.2.5.jar
       CassandraDataBulk "$@"

注意:根据需要调整到jamm.jar的路径

参考文献

至于运行时配置错误，请下载apache库并将其包含到类路径中。

在这里下载

如果在实现修复后收到新的异常，请下载GoogleCommon.jar和番石榴-16.0.1.jar，并将它们包含到类路径中。这些都是我自己的散装装载机到目前为止需要的所有罐子。