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From "wxn002@zjqunshuo.com" <wxn...@zjqunshuo.com>
Subject Cleaning up related issue
Date Mon, 19 Jun 2017 06:40:58 GMT
Hi,
After adding a new node, I started cleaning up task to remove the old data on the other 4
nodes. All went well except one node. The cleanup takes hours and the Cassandra daemon crashed
in the third node. I checked the node and found the crash was because of OOM. The Cassandra
data volume has zero space left. I removed the temporary files which I believe created during
the cleaning up process and started Cassanndra. 

The node joined the cluster successfully, but one thing I found. From the "nodetool status"
output, the node takes much data than other nodes. Nomally the load should be 700GB. But actually
it's 1000GB. Why it is larger? Please see the output below. 

UN  10.253.44.149   705.98 GB  256          40.4%             9180b7c9-fa0b-4bbe-bf62-64a599c01e58
 rack1
UN  10.253.106.218  691.07 GB  256          39.9%             e24d13e2-96cb-4e8c-9d94-22498ad67c85
 rack1
UN  10.253.42.113   623.73 GB  256          39.3%             385ad28c-0f3f-415f-9e0a-7fe8bef97e17
 rack1
UN  10.253.41.165   779.38 GB  256          40.1%             46f37f06-9c45-492d-bd25-6fef7f926e38
 rack1
UN  10.253.106.210  1022.7 GB  256          40.3%             a31b6088-0cb2-40b4-ac22-aec718dbd035
 rack1

Cheers,
-Simon
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