public static Map<String, Integer> getPoolConf(HiveConf hiveConf) {
    Map<String, Integer> poolConf = Maps.newHashMap();
    for (Map.Entry<String, String> entry : hiveConf) {
      Matcher matcher = Constants.COMPACTION_POOLS_PATTERN.matcher(entry.getKey());
      if (matcher.matches()) {
        poolConf.put(matcher.group(1), NumberUtils.toInt(entry.getValue(), 0));
      }
    }
    return poolConf;
  }
Check for that special case when minor compaction is supported or not.
<ul>
  <li>The table is Insert-only OR</li>
  <li>Query based compaction is not enabled OR</li>
  <li>The table has only acid data in it.</li>
</ul>
@param tblProperties The properties of the table to check
@param dir The {@link AcidDirectory} instance pointing to the table's folder on the filesystem.
@return Returns true if minor compaction is supported based on the given parameters, false otherwise.
ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/CompactorUtil.java