Member since
08-11-2016
3
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My Accepted Solutions
Title | Views | Posted |
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5283 | 10-31-2018 03:30 AM |
10-31-2018
03:30 AM
1 Kudo
Hi @szamasz, in the case of the 5.9 to 5.11 upgrade you do not see it, because there is no NameNode metadata format change, so there is no need to keep the previous format metadata around (both of those are on HDFS 2.6.0). If you want to see the change you can see it between 5.3 and 5.4 or upgrading to 6.x from 5.x. The NameNode UI will give you a warning anyway if you have unfinalized metadata changes. If you do not see that you are in the clear. I have just upgraded a cluster from 5.3 to 5.13 and have not finalized the upgrade, can take you a screenshot tomorrow. 🙂
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10-10-2018
05:07 PM
Hi, Most likely you have found it out by now, but an easy way is to check whether the NameNode's data directory contains the 'previous' folder in addition to the 'current' folder which is always there during normal operations. Also in the newer versions Cloudera Manager gives you a warning when you are running with unfinalized metadata.
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08-11-2016
08:05 AM
Just saved me an hour of debugging. Thanks!
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