Hadoop实战——怎么获取当前Map对象所在的block id

Hadoop实战——如何获取当前Map对象所在的block id

   如题，或者获取split ID in the mapfunction。

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InputSplit is = context.getInputSplit();

splitId = MD5Hash.digest(is.toString()).toString();

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lastSplit = reporter.getInputSplit();

splitId = MD5Hash.digest(lastSplit.toString()).toString();