Josh Elser created ACCUMULO-2570:
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Summary: Consider API additions to support non-batch oriented
reads/writes
Key: ACCUMULO-2570
URL: https://issues.apache.org/jira/browse/ACCUMULO-2570
Project: Accumulo
Issue Type: Improvement
Components: client, tserver
Reporter: Josh Elser
Primary Read API : Scanner and BatchScanner
Primary Write API: BatchWriter
Both the Read calls are oriented to a scanning a collection of key-values
(unless someone knows of the Range.exact method), and have internals that are
focused on multiple, repeated fetching of batches.
For writes, Mutations are buffered internally and are focused around sending
batches of updates.
While these classes do support pointed accesses (write a single Mutation, get
the Value from a single Key), the API is not succinct and may incur unnecessary
penalty due to the implementation also needing to support batch operations.
It would be nice to consider some new access patterns that are more focused
around very pointed accesses that reduce the API complexity for simple cases.
Extremely hypothetical example
{code}
Value v = connector.get("tableName", new Key("row", "cf", "cq", "viz");
connector.put("tableName", new Key("row", "cf", "cq", "viz"), new
Value("value"));
{code}
The implementation could focus on specifically handling this pointed accesses
in the most efficient way without worrying about also handling batch operations.
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