Github user adamjshook commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/143#discussion_r76690207
--- Diff:
server/gc/src/main/java/org/apache/accumulo/gc/GarbageCollectWriteAheadLogs.java
---
@@ -80,10 +80,10 @@
public class GarbageCollectWriteAheadLogs {
private static final Logger log =
LoggerFactory.getLogger(GarbageCollectWriteAheadLogs.class);
+ private static final Map<HostAndPort,Long> firstSeenDead = new
HashMap<HostAndPort,Long>();
private final AccumuloServerContext context;
private final VolumeManager fs;
- private final Map<HostAndPort,Long> firstSeenDead = new
HashMap<HostAndPort,Long>();
--- End diff --
Yeah, I was looking at the test cases to see about implementing something
to expose the bug and ensure it gets fixed, but I am at a loss (I've spent WAY
more time using Accumulo than digging through the source code).
I tested it locally by:
- Starting single-instance Accumulo
- Starting another TServer
- Inserting data
- Killing the other tserver
- Watch the GC add it to the map
- Watch the next GC cycle delete the WAL file (I configured it to have a
short delete time)
- Started the other tserver and add more data
- Kill the other tserver and watch the GC add it to the map on the first
cycle, then delete it next cycle
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