@Victor Hely Have you tried restarting Atlas that means it has stale config? Can you also share the logs in /var/log/atlas try to drill down the failed atlas service and paste the error in her ... View more

@Michael Bronson Above you are trying to fix corrupt HDFS blocks !! With the default replication factor of 3, you should be okay and below is fixing the filesystem What is your filesystem type ext4 or? You can run # e2fsck -y /dev/sdc You will not have an opportunity to validate the corrections being applied. On the other hand if you run # e2fsck -n /dev/sdc You can see what would happen without it actually being applied and if you run you'll be asked each # e2fsck /dev/sdc time a significant correction needs to be applied. ... View more

@Michael Bronson There could be a couple of reasons, lete check the obvious have you checked SE Linux on this host? if not $ echo 0 >/selinux/enforce $ cat /selinux/enforce # should output "0" Read-only filesystem" is not a permissions issue. The mount has become read-only, either because of errors in the filesystem or problems in the device itself. If you run "grep sdc /proc/mounts" you should see it as "ro". There may be some clue as to why in the messages in /var/log/syslog. Run File system check fsck it will repair some of the errors e.g execute the fsck on an unmounted file system to avoid any data corruption issues. e.g # fsck /dev/sdc That should repair the damages. ... View more

@Michael Bronson Could you try umounting and mount that disk? Your disk could have gone bac and the FS is in Read-Only mode Can you also set the failure tolerance to 1 Using Ambari UI--> HDFS-->Configs---Filter in for property "dfs.datanode.failed.volumes.tolerated" set it to 1 Restart stale HDFS services All should be in order ... View more

@Victor Hely Make sure your hbase is up and all green then retry!!! ... View more

@Christian Lunesa If you are only interested in the number and not to display all lines in the table then try select count(1) from table_name; That should be faster, hope that helps !!! ... View more

@Christian Lunesa If you are only interested in the number and not to display all lines in the table then try select count(1) from table_name; That should be faster, hope that helps !!! ... View more

@Swaapnika Guntaka Hey don't panic the files is right in there, the .Trash hides some subdirectories /Current/user see below. Replace {xxx} with the hdfs who deleted the file and after the last / you will see all the files deleted and are not yet expurged from HDFS in your case 360. As the user or hdfs run the below $hdfs dfs -ls /user/{xxx}/.Trash/Current/user/{xxx}/ and to restore the file $ hdfs dfs -cp /user/{xxx}/.Trash/Current/user/{xxx}/deleted_file /user/{xxx}/ Hope that helps ... View more

@Sriram Hadoop You will need a jaas.conf file for solr. Here is the documentation ... View more