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From "Aaron McCurry (JIRA)" <j...@apache.org>
Subject [jira] [Created] (BLUR-445) Remove online mutates from the Blur thrift api
Date Wed, 11 Nov 2015 14:15:11 GMT
Aaron McCurry created BLUR-445:
----------------------------------

             Summary: Remove online mutates from the Blur thrift api
                 Key: BLUR-445
                 URL: https://issues.apache.org/jira/browse/BLUR-445
             Project: Apache Blur
          Issue Type: Improvement
          Components: Blur
    Affects Versions: 0.3.0
            Reporter: Aaron McCurry
             Fix For: 0.3.0


The primary use case for Blur is for massive ingestion of information to be indexed and searched.
 Currently I believe the system has been made overly complex due to the atomic operations
in the online index mutation system.  It forces the shard servers to have writers open to
each of the indexes in the given table, this requires a lot of memory, cpu, and file resources
per shard.

Currently the system only allows for mutates to be atomic when mutating a single row.  Batch
mutates are not atomic.

I propose that we move all index mutations to the bulk indexing approach and utilize hdfs
snapshots for commiting index information within a given table.  This will allow the controller
and shard servers to become readonly with respect to the indexes.

Assuming we move forward with this approach a new daemon will need to created, and index manager.
 This daemon will coordinate indexing (MR, Spark, Tez, Flink, etc) and merging globally for
the cluster.





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