Ambari metrics collector ERROR

org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /ams-hbase-unsecure/meta-region-server
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
    at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
    at org.apache.zookeeper.ZooKeeper.getData(ZooKeeper.java:1155)
    at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.getData(RecoverableZooKeeper.java:359)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.getData(ZKUtil.java:622)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.getMetaRegionState(MetaTableLocator.java:491)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.getMetaRegionLocation(MetaTableLocator.java:172)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:608)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:589)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:568)
    at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1192)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1159)
    at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)
    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:156)
    at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:60)
    at org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)
    at org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:326)
    at org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:301)
    at org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:166)
    at org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:161)
    at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:794)

ambari에서 위와 같은 에러가 나면서<br/> ambari-metric-collector가 실행이 안돼는 현상이 발생<br/>

원인은 하드 용량이 꽉 차면서 check포인트를 기록하지 못하고 Hbase, zookeeper랑 동기화가 어긋남

해결 방안은

내 컴퓨터 기준 :/var/lib/ambari-metrics-collector/hbase-tmp/zookeeper

폴더 안에 있는 모든 데이터를 삭제하고 재시작하면 됨...

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