Make Index Output Buffer Size Configurable
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Key: LUCENE-2453
URL: https://issues.apache.org/jira/browse/LUCENE-2453
Project: Lucene - Java
Issue Type: Improvement
Components: Store
Affects Versions: 3.0.1
Reporter: Karthick Sankarachary
Currently, the buffered index input class allows sub-classes and users thereof
to specify a size for the input buffer, which by default is 1024 bytes. In
practice, this option is leveraged by the simple file and compound segment
index input sub-classes.
By the same token, it would be nice if the buffered index output class could
open up it's buffer size for users to configure. In particular, this would
allow sub-classes thereof to align the output buffer size, which by default is
16348 bytes, to that of the underlying directory's data unit. For example, a
network-based directory might want to buffer data in multiples of it's maximum
transmission unit. To use an existing use-case, the file system-based directory
could potentially choose to align it's output buffer size to the operating
system's file block size.
The proposed change to the buffered index output class involves defining a
one-arg constructor that takes a user-defined buffer size, and a default
constructor that uses the currently defined buffer size.
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