Github user joshelser commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/224#discussion_r105247760
--- Diff:
server/tserver/src/main/java/org/apache/accumulo/tserver/compaction/strategies/ConfigurableCompactionStrategy.java
---
@@ -48,6 +53,83 @@ void gatherInformation(MajorCompactionRequest request) {}
abstract boolean shouldCompact(Entry<FileRef,DataFileValue> file,
MajorCompactionRequest request);
}
+ private static class SummaryTest extends Test {
+
+ private boolean selectExtraSummary;
+ private boolean selectNoSummary;
+
+ private boolean summaryConfigured = true;
+ private boolean gatherCalled = false;
+
+ // files that do not need compaction
+ private Set<FileRef> okFiles = Collections.emptySet();
+
+ public SummaryTest(boolean selectExtraSummary, boolean
selectNoSummary) {
+ this.selectExtraSummary = selectExtraSummary;
+ this.selectNoSummary = selectNoSummary;
+ }
+
+ @Override
+ void gatherInformation(MajorCompactionRequest request) {
+ gatherCalled = true;
+ Collection<SummarizerConfiguration> configs =
SummarizerConfiguration.fromTableProperties(request.getTableProperties());
+ if (configs.size() == 0) {
+ summaryConfigured = false;
+ } else {
+ Set<SummarizerConfiguration> configsSet = configs instanceof Set ?
(Set<SummarizerConfiguration>) configs : new HashSet<>(configs);
+
+ for (FileRef fref : request.getFiles().keySet()) {
+ Map<SummarizerConfiguration,Summary> sMap = new HashMap<>();
+ Collection<Summary> summaries;
+ try {
+ summaries =
request.getSummaries(Collections.singletonList(fref), conf ->
configsSet.contains(conf));
+ } catch (IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ for (Summary summary : summaries) {
+ sMap.put(summary.getSummarizerConfiguration(), summary);
+ }
+
+ boolean needsCompaction = false;
+ for (SummarizerConfiguration sc : configs) {
+ Summary summary = sMap.get(sc);
+
+ if (summary == null && selectNoSummary) {
+ needsCompaction = true;
+ break;
+ }
+
+ if (summary != null && summary.getFileStatistics().getExtra()
> 0 && selectExtraSummary) {
+ needsCompaction = true;
+ break;
+ }
+ }
+
+ if (!needsCompaction) {
+ okFiles.add(fref);
--- End diff --
It looks like `okFiles` is only set once (to `Collections.emptyMap()`).
Isn't the `Map` returned by that method immutable?
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