hi aditya , everything was great until I intend to install the service for this example we try to install the service - Knox I try this: curl -u xxxx:xxxx -i -X PUT -d '{"ServiceInfo": {"state" : "INSTALLED"}}' http://182.243.5.12 :8080/api/v1/clusters/HDP101/services/Knox HTTP/1.1 400 Bad Request X-Frame-Options: DENY X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Cache-Control: no-store Pragma: no-cache Set-Cookie: AMBARISESSIONID=13q980rkix8lh1ewku7n3xlhfh;Path=/;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT User: admin Content-Type: text/plain Content-Length: 107 Server: Jetty(8.1.19.v20160209) ... View more

another remark if I set this value to 1 it mean that HDFS will start up in spite the volume is bad ? or not in use , ... View more

yes sure thank you so much ... View more

hi aditye , can you give me real example for the first API second how to get these values ? stack_versions {stack-version-no} repository_versions {repository-version-no} ... View more

hi aditye regarding the - http://{ambari-server}:{port}/api/v1/clusters/{clustername}/services. , can you show me please the full approach ( full syntax ) ... View more

hi Jay , I have idea but not sure about this so I need your advice , on the problematic worker we have extra volume - sdg , and the bad volume is sdf , so maybe we need to umount the sdf and mount the volume sdg in place sdf , and change the DataNode directories from ambari GUI from sdf to sdg - and then restart the component HDFS on the worker , what you think ? ... View more

hi Aditya , on each worker machine we have 5 volumes , and we not want to stay with 4 volume on the problematic workers , so about option 2 we not want to remove the volume , second what is the meaning to set the dfs.datanode.failed.volumes.tolerated to 1 ? after HDFS restart - it will fix the problem ? ... View more

hi Jay - grep dfs.datanode.failed.volumes.tolerated /etc/hadoop/conf/hdfs-site.xml <name>dfs.datanode.failed.volumes.tolerated</name> this already set in the xml file ... View more

here the permissions : ls -ltr /xxxxx/sdc/hadoop/hdfs/data/ drwxr-xr-x. 3 hdfs hadoop 4096 current -rw-r--r--. 1 hdfs hadoop 28 in_use.lock ... View more