There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
The program yum-complete-transaction is found in the yum-utils package.

意思是，有未完成的yum事務，建議先執行yum-complete-transaction命令清除。

處理步驟：
<pre>
# 安裝 yum-complete-transaction

yum install yum-utils

# 執行 yum-complete-transaction

yum-complete-transaction –cleanup-only

# 清除可能存在的重複包

package-cleanup –dupes

# 清除可能存在的損壞包

package-cleanup –problems
</pre>