Cassandra節點工具修復 - 內存不足錯誤

Question

我有卡桑德拉Datastax 2.2.3集羣（只有一個節點），並且作爲測試，我添加了一個新節點。在成功添加新節點並以bootstrap=false開始之後，我試圖用nodetool repair將其與之重新綁定。

ERROR [SharedPool-Worker-142] 2015-10-30 14:02:41,993 JVMStabilityInspector.java:117 - JVM state determined to be unstable. Exiting forcefully due to: 
java.lang.OutOfMemoryError: Java heap space 
    at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57) ~[na:1.7.0_80] 
    at java.nio.ByteBuffer.allocate(ByteBuffer.java:331) ~[na:1.7.0_80] 
    at org.apache.cassandra.utils.memory.SlabAllocator.getRegion(SlabAllocator.java:137) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.memory.SlabAllocator.allocate(SlabAllocator.java:97) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.memory.ContextAllocator.allocate(ContextAllocator.java:57) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.memory.ContextAllocator.clone(ContextAllocator.java:47) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.memory.MemtableBufferAllocator.clone(MemtableBufferAllocator.java:61) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.Memtable.put(Memtable.java:209) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.ColumnFamilyStore.apply(ColumnFamilyStore.java:1244) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:406) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.Keyspace.apply(Keyspace.java:366) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.Mutation.apply(Mutation.java:214) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.db.MutationVerbHandler.doVerb(MutationVerbHandler.java:50) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:66) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) ~[na:1.7.0_80] 
    at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [apache-cassandra-2.2.3.jar:2.2.3] 
    at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80] 

這：

然而，這個錯誤在舊節點的日誌彈出

ERROR [SharedPool-Worker-126] 2015-10-30 14:02:04,049 SEPWorker.java:141 - Failed to execute task, unexpected exception killed worker: {} 
java.lang.IllegalStateException: Shutdown in progress 
    at java.lang.ApplicationShutdownHooks.remove(ApplicationShutdownHooks.java:82) ~[na:1.7.0_80] 
    at java.lang.Runtime.removeShutdownHook(Runtime.java:239) ~[na:1.7.0_80] 
    at org.apache.cassandra.service.StorageService.removeShutdownHook(StorageService.java:728) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.JVMStabilityInspector$Killer.killCurrentJVM(JVMStabilityInspector.java:119) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.JVMStabilityInspector$Killer.killCurrentJVM(JVMStabilityInspector.java:109) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.utils.JVMStabilityInspector.inspectThrowable(JVMStabilityInspector.java:68) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:168) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) ~[apache-cassandra-2.2.3.jar:2.2.3] 
    at java.lang.Thread.run(Thread.java:745) [na:1.7.0_80] 

和修復失敗：

Repair session 24406790-8014-11e5-bf74-a1fb6926eba3 for range (8334390792461377170,8383846774169681811] failed with error Endpoint /x.x.x.x died 

我試着運行nodetool repair -seq - 結果是一樣的。

有問題？

• nodetool修復需要多少內存？如何檢查？
• 我該如何重新平衡戒指？有什麼方法可以一步步觸發修復嗎？
• 如果不是，我可以添加「虛擬」RAM（也許作爲交換），增加堆並觸發修復？

Answer 1

運行修復不會重新平衡環。你想要的是在新節點上運行nodetool rebuild以將數據傳輸到它。