Index: src/contrib/hbase/src/java/org/apache/hadoop/hbase/HRegion.java =================================================================== --- src/contrib/hbase/src/java/org/apache/hadoop/hbase/HRegion.java (revision 605070) +++ src/contrib/hbase/src/java/org/apache/hadoop/hbase/HRegion.java (working copy) @@ -559,7 +559,7 @@ throw new IOException("Cannot split; target file collision at " + dirA); } HRegionInfo regionBInfo = new HRegionInfo(this.regionInfo.getTableDesc(), - midKey, null); + midKey, this.regionInfo.getEndKey()); Path dirB = getSplitRegionDir(splits, HRegionInfo.encodeRegionName(regionBInfo.getRegionName())); if(this.fs.exists(dirB)) {