Github user keith-turner commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/106#discussion_r65430644
--- Diff:
core/src/main/java/org/apache/accumulo/core/file/rfile/bcfile/Compression.java
---
@@ -244,44 +361,58 @@ public synchronized OutputStream
createCompressionStream(OutputStream downStream
} else {
bos1 = downStream;
}
- conf.setInt("io.compression.codec.snappy.buffersize", 64 * 1024);
+ // use the default codec
CompressionOutputStream cos = snappyCodec.createOutputStream(bos1,
compressor);
BufferedOutputStream bos2 = new BufferedOutputStream(new
FinishOnFlushCompressionStream(cos), DATA_OBUF_SIZE);
return bos2;
}
@Override
- public synchronized InputStream
createDecompressionStream(InputStream downStream, Decompressor decompressor,
int downStreamBufferSize) throws IOException {
+ public InputStream createDecompressionStream(InputStream downStream,
Decompressor decompressor, int downStreamBufferSize) throws IOException {
if (!isSupported()) {
throw new IOException("SNAPPY codec class not specified. Did you
forget to set property " + CONF_SNAPPY_CLASS + "?");
}
- if (downStreamBufferSize > 0) {
- conf.setInt("io.file.buffer.size", downStreamBufferSize);
+
+ CompressionCodec decomCodec = snappyCodec;
+ // if we're not using the same buffer size, we'll pull the codec
from the loading cache
+ if (DEFAULT_BUFFER_SIZE != downStreamBufferSize) {
+ Entry<Algorithm,Integer> sizeOpt = Maps.immutableEntry(SNAPPY,
downStreamBufferSize);
+ try {
+ decomCodec = codecCache.get(sizeOpt);
+ } catch (ExecutionException e) {
+ throw new IOException(e);
+ }
}
- CompressionInputStream cis =
snappyCodec.createInputStream(downStream, decompressor);
+
+ CompressionInputStream cis =
decomCodec.createInputStream(downStream, decompressor);
BufferedInputStream bis2 = new BufferedInputStream(cis,
DATA_IBUF_SIZE);
return bis2;
}
@Override
- public synchronized boolean isSupported() {
- if (!checked) {
- checked = true;
- String extClazz = (conf.get(CONF_SNAPPY_CLASS) == null ?
System.getProperty(CONF_SNAPPY_CLASS) : null);
- String clazz = (extClazz != null) ? extClazz : defaultClazz;
- try {
- LOG.info("Trying to load snappy codec class: " + clazz);
- snappyCodec = (CompressionCodec)
ReflectionUtils.newInstance(Class.forName(clazz), conf);
- } catch (ClassNotFoundException e) {
- // that is okay
- }
- }
+ public boolean isSupported() {
+
--- End diff --
since this is no long synchronized.. wondering if snappyCodec should be
volatile
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
