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== 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/%3C20126171.post@talk.nabble.com%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/%3C20126171.post@talk.nabble.com%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.
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