CODEWITHSUNDEEP
nosqlcassandrahbasebigdata
Vinodh
Vinodh

Reputation: 916

Optimal number of column families in HBase and Cassandra

How Cassandra supports more number of optimal column families when compared to HBase? Any underlying implementation differences?

Upvotes: 1

Views: 412

Answers (1)

jbellis
jbellis

Reputation: 19377

The HBase Book says,

HBase currently does not do well with anything above two or three column families so keep the number of column families in your schema low. Currently, flushing and compactions are done on a per Region basis so if one column family is carrying the bulk of the data bringing on flushes, the adjacent families will also be flushed though the amount of data they carry is small.

Cassandra flushes per-columnfamily, per replica. How it determines when to flush each when there are dozens or hundreds of CFs is touched on in this post.

Upvotes: 4

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