CODEWITHSUNDEEP
hbase
Malt
Malt

Reputation: 30285

What are the differences between HBase version 1.X and 2.X

What are the significant differences between the 1.X versions of HBase and 2.X?

The official changelog just contains thousands of closed JIRA tickets. The release notes are slightly more readable, but not by much.

Can someone please provide a more readable explanation?

Upvotes: 2

Views: 1940

Answers (1)

fury.slay
fury.slay

Reputation: 1258

The significant changes between 1.x and 2.x versions are:

  • Hbase 2.x works only on Java 8+
  • Older 1.x client APIs are deprecated. APIs are made better in 2.x
  • No managed connections in 2.x
  • Changes in Filter and Co-processor

2.x versions are aimed at achieving below points:

  • Heavy update operations to be better in 2.x than in 1.x
  • Make read cache faster as a whole
  • Make use of available RAM
  • Reduce temporary garbage for reading
  • Reduce GC in writing and improve throughput
  • Many off-heaping changes
  • Changes in memstore like reduce flush to disk, memory compaction, etc
  • Async client
  • Better native backup-restore solution

There would be other changes too on co-processor metrics api, replication changes, etc.

Upvotes: 3

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