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java.io.IOException: hconnection-0x5314972b closed	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1153)	at org.apache.hadoop.hbase.client.CoprocessorHConnection.locateRegion(CoprocessorHConnection.java:41)	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.relocateRegion(ConnectionManager.java:1133)	at org.apache.hadoop.hbase.client.CoprocessorHConnection.relocateRegion(CoprocessorHConnection.java:41)	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1338)	at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1162)	at org.apache.hadoop.hbase.client.CoprocessorHConnection.locateRegion(CoprocessorHConnection.java:41)	at org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:300)	at org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:152)	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.(ClientScanner.java:161)	at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:794)	at org.apache.hadoop.hbase.client.HTableWrapper.getScanner(HTableWrapper.java:215)	at org.apache.phoenix.schema.stats.StatisticsUtil.readStatistics(StatisticsUtil.java:136)	at org.apache.phoenix.schema.stats.StatisticsWriter.deleteStats(StatisticsWriter.java:230)	at org.apache.phoenix.schema.stats.StatisticsScanner$StatisticsScannerCallable.call(StatisticsScanner.java:117)	at org.apache.phoenix.schema.stats.StatisticsScanner$StatisticsScannerCallable.call(StatisticsScanner.java:102)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)