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    This was a bug at HBase 1.0.1, it has been patched, so an update to 1.0.2 or further should solve the problem. URL for the Jira thread:

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via Stack Overflow by BJ_
, 1 year ago
Lost task 0.1 in stage 1.0 (TID 5, LV-WS09): Failed to fetch block after 1 fetch failures. Most recent failure cause: Connection refused: ubuntu-cluster-4/	at Method)	at	at	at$AbstractNioUnsafe.finishConnect(	at	at	at	at	at io.netty.util.concurrent.SingleThreadEventExecutor$	at