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From Hector Urroz <>
Subject Data loss and corruption
Date Wed, 09 Jun 2010 05:45:56 GMT
Hi all,

We're starting to prototype Cassandra for use in a production system and
became concerned about data corruption after reading the excellent article:

where Evan Weaver writes:

"Cassandra is an alpha product and could, theoretically, lose your data. In
particular, if you change the schema specified in the storage-conf.xml file,
you must follow these instructions carefully, or corruption will occur (this
is going to be fixed). Also, the on-disk storage format is subject to
change, making upgrading a bit difficult."

Is database corruption a well-known or common problem with Cassandra? What
sources of information would you recommend to help devise a strategy to
minimize corruption risk, and to detect and recover when corruption does


Hector Urroz

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