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Todd Lipcon commented on HBASE-4216: ------------------------------------ {noformat} 11/08/17 10:44:59 WARN client.HConnectionManager$HConnectionImplementation: Encountered problems when prefetch META table: java.io.IOException: java.lang.IllegalArgumentException: hostname can't be null at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$2.processRow(HConnectionManager.java:822) at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:212) at org.apache.hadoop.hbase.client.MetaScanner.access$000(MetaScanner.java:52) at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:130) at org.apache.hadoop.hbase.client.MetaScanner$1.connect(MetaScanner.java:127) at org.apache.hadoop.hbase.client.HConnectionManager.execute(HConnectionManager.java:341) at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:127) at org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:103) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.prefetchRegionCache(HConnectionManager.java:828) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegionInMeta(HConnectionManager.java:882) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.locateRegion(HConnectionManager.java:770) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.relocateRegion(HConnectionManager.java:740) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionLocation(HConnectionManager.java:659) at org.apache.hadoop.hbase.client.ServerCallable.instantiateServer(ServerCallable.java:70) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getRegionServerWithRetries(HConnectionManager.java:1238) at org.apache.hadoop.hbase.client.HTable.get(HTable.java:612) at com.yahoo.ycsb.db.HBaseClient.read(HBaseClient.java:160) at com.yahoo.ycsb.DBWrapper.read(DBWrapper.java:86) at com.yahoo.ycsb.workloads.CoreWorkload.doTransactionRead(CoreWorkload.java:444) at com.yahoo.ycsb.workloads.CoreWorkload.doTransaction(CoreWorkload.java:391) at com.yahoo.ycsb.ClientTask.call(ClientTask.java:47) at com.yahoo.ycsb.RateLimiter.call(RateLimiter.java:53) at com.yahoo.ycsb.RateLimiter.call(RateLimiter.java:13) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: java.lang.IllegalArgumentException: hostname can't be null at java.net.InetSocketAddress.<init>(InetSocketAddress.java:121) at org.apache.hadoop.hbase.HServerAddress.getResolvedAddress(HServerAddress.java:89) at org.apache.hadoop.hbase.HServerAddress.<init>(HServerAddress.java:75) at org.apache.hadoop.hbase.HRegionLocation.getServerAddress(HRegionLocation.java:101) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.cacheLocation(HConnectionManager.java:1123) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.access$000(HConnectionManager.java:439) at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation$2.processRow(HConnectionManager.java:818) ... 27 more {noformat} Seems like a race since it went away > IllegalArgumentException prefetching from META > ---------------------------------------------- > > Key: HBASE-4216 > URL: https://issues.apache.org/jira/browse/HBASE-4216 > Project: HBase > Issue Type: Bug > Components: client > Affects Versions: 0.92.0 > Reporter: Todd Lipcon > Priority: Critical > > Received one of these while doing a YCSB test on 26 nodes on trunk: > java.io.IOException: java.lang.IllegalArgumentException: hostname can't be > null -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira