Github user ShawnWalker commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/90#discussion_r59571157
--- Diff:
core/src/main/java/org/apache/accumulo/core/file/FileOperations.java ---
@@ -55,23 +56,24 @@ public static FileOperations getInstance() {
*/
public abstract FileSKVIterator openReader(String file, Range range,
Set<ByteSequence> columnFamilies, boolean inclusive, FileSystem fs,
Configuration conf,
- AccumuloConfiguration tableConf) throws IOException;
+ RateLimiter readLimiter, AccumuloConfiguration tableConf) throws
IOException;
public abstract FileSKVIterator openReader(String file, Range range,
Set<ByteSequence> columnFamilies, boolean inclusive, FileSystem fs,
Configuration conf,
- AccumuloConfiguration tableConf, BlockCache dataCache, BlockCache
indexCache) throws IOException;
+ RateLimiter readLimiter, AccumuloConfiguration tableConf, BlockCache
dataCache, BlockCache indexCache) throws IOException;
/**
* Open a reader that fully support seeking and also enable any
optimizations related to seeking, like bloom filters.
*
*/
- public abstract FileSKVIterator openReader(String file, boolean
seekToBeginning, FileSystem fs, Configuration conf, AccumuloConfiguration
acuconf)
- throws IOException;
+ public abstract FileSKVIterator openReader(String file, boolean
seekToBeginning, FileSystem fs, Configuration conf, RateLimiter readLimiter,
--- End diff --
I was thinking perhaps a fluent syntax for opening readers/writers would
make sense.
E.g. so that it admits syntax like the following:
```java
FileSKVIterator iterator=fileOperations.openReader(accumuloConfiguration)
.ofFile(filename, fileSystem, fsConfiguration)
.withRateLimiter(rateLimiter) // optional
.withCache(dataCache, indexCache) // optional
.forScanning(range, columnFamilies, inclusive);
```
Unfortunately, introducing such a change seemed a bit much for the scope of
what I wanted to accomplish.
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