CassandraDaemon.java:195-线程线程异常[MemtableFlushWriter： 10,5， main]

Question

我正在尝试在 Centos 7 上安装卡桑德拉 v3.0.2。我完全按照说明进行操作，我收到以下错误。只是为了重申我做了yum安装jna，版本是在4.0.0在/usr/share/java和卡桑德拉自由目录中

下面是Stacktrace

*ERROR [MemtableFlushWriter:9] 2016-01-25 20:40:05,801 CassandraDaemon.java:195 - Exception in thread Thread[MemtableFlushWriter:9,5,main]
java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.Native
        at org.apache.cassandra.utils.memory.MemoryUtil.allocate(MemoryUtil.java:95) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.util.Memory.(Memory.java:74) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.util.SafeMemory.(SafeMemory.java:32) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.compress.CompressionMetadata$Writer.(CompressionMetadata.java:316) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.compress.CompressionMetadata$Writer.open(CompressionMetadata.java:330) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.compress.CompressedSequentialWriter.(CompressedSequentialWriter.java:76) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.util.SequentialWriter.open(SequentialWriter.java:163) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.sstable.format.big.BigTableWriter.(BigTableWriter.java:73) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.sstable.format.big.BigFormat$WriterFactory.open(BigFormat.java:93) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.sstable.format.SSTableWriter.create(SSTableWriter.java:96) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.io.sstable.SimpleSSTableMultiWriter.create(SimpleSSTableMultiWriter.java:114) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.compaction.AbstractCompactionStrategy.createSSTableMultiWriter(AbstractCompactionStrategy.java:514) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.compaction.CompactionStrategyManager.createSSTableMultiWriter(CompactionStrategyManager.java:506) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.ColumnFamilyStore.createSSTableMultiWriter(ColumnFamilyStore.java:472) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.Memtable$FlushRunnable.createFlushWriter(Memtable.java:432) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.Memtable$FlushRunnable.writeSortedContents(Memtable.java:366) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.db.Memtable$FlushRunnable.runMayThrow(Memtable.java:352) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at com.google.common.util.concurrent.MoreExecutors$DirectExecutorService.execute(MoreExecutors.java:299) ~[guava-18.0.jar:na]
        at org.apache.cassandra.db.ColumnFamilyStore$Flush.run(ColumnFamilyStore.java:1037) ~[apache-cassandra-3.0.2.jar:3.0.2]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) ~[na:1.8.0_66]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) ~[na:1.8.0_66]
        at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_66]*

Answer 1

以root用户身份运行Cassandra服务。问题将得到解决

Answer 2

这是 /tmp 的权限问题。显然，/tmp上的777 chmod不起作用。当我使用jna运行一个示例程序时，我开始知道这一点.jar它清楚地打印出错误。显然，我们使用 centos -7 强化图像，这与正常的 centos-7 不同，因此我的问题。

为了解决这个问题，我移动了卡桑德拉温度/输出目录/家/卡桑德拉。

但如果卡珊德拉的日志打印出来是 /tmp的许可问题，那就太好了。