MAPREDUCE-5137. AM web UI: clicking on Map Task results in 500 error. Contributed by Thomas Graves


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1466959 13f79535-47bb-0310-9956-ffa450edef68
Preparing for 0.23.8 development

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1467024 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1467072 FIXES: HADOOP-9222. Cover package with org.apache.hadoop.io.lz4 unit tests. Contributed by Vadim Bondarev


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1467080 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1467090 FIXES: HADOOP-9233. Cover package org.apache.hadoop.io.compress.zlib with unit tests. Contributed by Vadim Bondarev


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