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The following page has been changed by stack: http://wiki.apache.org/hadoop/Hbase/Troubleshooting ------------------------------------------------------------------------------ [[Anchor(5)]] == Problem: "xceiverCount 258 exceeds the limit of concurrent xcievers 256" == - * See an exception with above message in logs (usually hadoop 0.18.x). + * See an exception with above message in logs, usually the datanode logs. === Causes === * An upper bound on connections was added in Hadoop (HADOOP-3633/HADOOP-3859). === Resolution === @@ -100, +100 @@ === Causes === * Slow datanodes are marked as down by DFSClient; eventually all replicas are marked as 'bad' (HADOOP-3831). === Resolution === - * Try setting '''dfs.datanode.socket.write.timeout''' to zero. See the thread at [http://mail-archives.apache.org/mod_mbox/hadoop-hbase-user/200810.mbox/%[email protected]%3e message from jean-adrien] for some background. + * Try setting '''dfs.datanode.socket.write.timeout''' to zero. See the thread at [http://mail-archives.apache.org/mod_mbox/hadoop-hbase-user/200810.mbox/%[email protected]%3e message from jean-adrien] for some background. Note, this is an hdfs client configuration so needs to be available in $HBASE_HOME/conf. Making the change only in $HADOOP_HOME/conf is not sufficient. Copy your amended hadoop-site.xml to the hbase conf directory or add this configuration to $HBASE_HOME/conf/hbase-site.xml.
