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via by Unknown author, 1 year ago<br>&gt; &gt; at<br>&gt; &gt; \<br>&gt; \ &gt; at<br>&gt; &gt; \ org.apache.hadoop.mapred.Merger$MergeQueue.lessThan(<br
java.lang.RuntimeException:<br>&gt; &gt;        at<br>&gt; &gt; \<br>&gt; \
&gt;        at<br>&gt; &gt; \
org.apache.hadoop.mapred.Merger$MergeQueue.lessThan(<br>&gt; &gt;     \
at<br>&gt; &gt; org.apache.hadoop.util.PriorityQueue.upHeap(<br \
&gt; &gt;        at \
 org.apache.hadoop.util.PriorityQueue.put(<br>&gt; &gt;        \	at org.apache.hadoop.mapred.Merger$MergeQueue.merge(	at org.apache.hadoop.mapred.Merger$MergeQueue.merge(	at org.apache.hadoop.mapred.Merger.merge(