https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196672#M62293 <A rel="user" href="https://community.cloudera.com/users/13471/it-duanxiong.html" nodeid="13471">@Xiong Duan</A><P> - fully reload configuration files like hdfs-site.xml/core-site.xml without a restart is not supported. </P><P>However, you can change certain configuration keys without a restart using </P><PRE>hdfs dfsadmin [-reconfig &lt;namenode|datanode&gt; &lt;host:ipc_port&gt; &lt;start|status|properties&gt;]</PRE> Wed, 07 Jun 2017 02:57:57 GMT xyao 2017-06-07T02:57:57Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196670#M62291 <P>when I study HDFS,I encounter one question,I want to make hadoop read the confighration file again,because I have changed the file, when stay hadoop open。and I don't want to reboot the hadoop service!</P><P> thank you very much!</P> Sun, 04 Jun 2017 16:28:01 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196670#M62291 it_duanxiong 2017-06-04T16:28:01Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196671#M62292 <P><A rel="user" href="https://community.cloudera.com/users/13471/it-duanxiong.html" nodeid="13471">@Xiong Duan</A> - Looks like you accidentally posted the same question twice:</P><P><A href="https://community.hortonworks.com/questions/106117/hihow-to-make-hadoop-to-read-the-configuration-fil-1.html" target="_blank">https://community.hortonworks.com/questions/106117/hihow-to-make-hadoop-to-read-the-configuration-fil-1.html</A></P><P>Can you please close this one</P> Tue, 06 Jun 2017 22:50:10 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196671#M62292 namaheshwari 2017-06-06T22:50:10Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196672#M62293 <A rel="user" href="https://community.cloudera.com/users/13471/it-duanxiong.html" nodeid="13471">@Xiong Duan</A><P> - fully reload configuration files like hdfs-site.xml/core-site.xml without a restart is not supported. </P><P>However, you can change certain configuration keys without a restart using </P><PRE>hdfs dfsadmin [-reconfig &lt;namenode|datanode&gt; &lt;host:ipc_port&gt; &lt;start|status|properties&gt;]</PRE> Wed, 07 Jun 2017 02:57:57 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196672#M62293 xyao 2017-06-07T02:57:57Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196673#M62294 <P>Yeah，maybe because the network problem.so i summit the same question twice,sorry! </P> Wed, 07 Jun 2017 07:44:07 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196673#M62294 it_duanxiong 2017-06-07T07:44:07Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196674#M62295 <P>thank you !I will try this.</P> Wed, 07 Jun 2017 07:44:27 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Hi-How-to-make-hadoop-to-read-the-configuration-file-again/m-p/196674#M62295 it_duanxiong 2017-06-07T07:44:27Z