cassandra的安裝未能滿足依賴關係

我嘗試安裝cassandra appache。我正在按照debianpackaging wiki中的步驟操作。我已經添加了兩行到我的sources.list：cassandra的安裝未能滿足依賴關係

[email protected]:~$ cat /etc/apt/sources.list | grep "apache" 
deb http://www.apache.org/dist/cassandra/debian 30x main 
deb-src http://www.apache.org/dist/cassandra/debian 30x main 
[email protected]:~$

我的Java版本看起來不錯，以及：

[email protected]:~$ java -version 
java version "1.8.0_60" 
Java(TM) SE Runtime Environment (build 1.8.0_60-b27) 
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode) 
[email protected]:~$

然而，當我嘗試安裝它，我收到以下錯誤消息：

[email protected]:~$ sudo apt-get install cassandra 
Reading package lists... Done 
Building dependency tree  
Reading state information... Done 
Some packages could not be installed. This may mean that you have 
requested an impossible situation or if you are using the unstable 
distribution that some required packages have not yet been created 
or been moved out of Incoming. 
The following information may help to resolve the situation: 

The following packages have unmet dependencies: 
cassandra : Depends: openjdk-8-jre-headless but it is not installable or 
         java8-runtime but it is not installable 
      Recommends: ntp but it is not going to be installed or 
         time-daemon 
E: Unable to correct problems, you have held broken packages.

我該如何解決這個問題？

來源

2016-10-08 math

你使用'的apt-GET'安裝Java？ –

您需要安裝從反向移植的openjdk-8-jre-headless，運行：

apt edit-sources

添加以下行：

deb http://httpredir.debian.org/debian jessie-backports main

更新：

apt-get update && apt-get upgrade 
apt-get -f install

安裝所需的軟件包：

apt-get -t jessie-backports install openjdk-8-jre-headless 
apt-get install ntp

安裝cassandra

apt-get install cassandra

來源

2016-11-22 11:00:05 GAD3R

sudo add-apt-repository ppa:openjdk-r/ppa 
sudo apt-get update 
sudo apt-get install cassandra

來源

2016-11-21 14:09:25 super8joe

它爲我工作，但你能解釋一下嗎？ –

cassandra的安裝未能滿足依賴關係

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