系统环境：ubuntu14.04 server cloudera CDH 5.10 共计28个节点。单节点内存128G。有6台机器是24核，22台机器是32核。有10台机器磁盘容量是1.8T 18台机器磁盘容量是12.8T。
resourceManager,namenode 在同一节点上，且该节点不包括datanode和nodeManager服务。
剩余28节点均包含了datanode和nodeManager服务
最近集群做TB级数据随机化实验，hdfs各节点数据分布不太均衡，10台磁盘容量为1.8T的机器磁盘全部占满，导致这些节点上yarn的nodemanager 没有足够的空间，致使9个nodemanager 停止接受服务，1个nodemanager 服务终止，且无法启动。
考虑将10台低容量磁盘机器datanode角色停止授权，数据分发到其他大容量机器上，并删除hdfs数据。
在停止授权期间，我给集群又添加了一台32核，128G内存 1.8T磁盘的机器，分配了nodeManager角色。
上述工作顺利完成后，重新启动yarn.
大部分机器正常工作，只有上述服务终止的nodemanager依然无法启动，查询日志报错如下：
FATAL org.apache.hadoop.yarn.server.nodemanager.NodeManager
Error starting NodeManager
org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:227)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:544)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:591)
Caused by: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
at org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.openDatabase(NMLeveldbStateStoreService.java:944)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:931)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:204)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
… 5 more
google搜索 org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch 给出的解决方案：
网址：
https://community.hortonworks.com/questions/86301/nodemanager-fails-to-start.html
Maybe a sst file got corrupt can you try to remove the folder of /var/log/hadoop-yarn/nodemanager/recovery-state from failed nodemanagers and check if starts?
These files stays in the system even if you decomission the nodes.
上述文件在节点上并不存在。故继续查看日志：
上午9点56:15.339分 INFO org.apache.hadoop.yarn.server.nodemanager.NodeManager
registered UNIX signal handlers for [TERM, HUP, INT]
4月 14, 上午9点56:16.426分 INFO org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService
Using state database at /var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state for recovery
4月 14, 上午9点56:16.457分 INFO org.apache.hadoop.service.AbstractService
Service org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService failed in state INITED; cause: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
at org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.openDatabase(NMLeveldbStateStoreService.java:944)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:931)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:204)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:227)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:544)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:591)
4月 14, 上午9点56:16.466分 INFO org.apache.hadoop.service.AbstractService
Service NodeManager failed in state INITED; cause: org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
org.apache.hadoop.service.ServiceStateException: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
at org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:227)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:544)
at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:591)
Caused by: org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: checksum mismatch
at org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.openDatabase(NMLeveldbStateStoreService.java:944)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:931)
at org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:204)
at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
… 5 more
发现疑似目录：/var/lib/hadoop-yarn/yarn-nm-recovery/yarn-nm-state下存在：
005615.sst 005638.log 005640.log CURRENT LOCK MANIFEST-004397
移除所有文件。重启nodemanager 成功。
回顾错误原因可能是，我在该nodemanager终止情况下，在集群中添加了新的nodemanager，使得角色数目增加，而启动失败的nodemanager时，它使用存储的状态来恢复，在和数据库校验过程中发现数目不符合而启动失败。因此删除上述目录下的文件。