Github user gokulavasan commented on a diff in the pull request:
https://github.com/apache/incubator-tephra/pull/34#discussion_r100655264
--- Diff:
tephra-hbase-compat-1.1-base/src/main/java/org/apache/tephra/hbase/txprune/HBaseTransactionPruningPlugin.java
---
@@ -322,6 +333,28 @@ private long computePruneUpperBound(TimeRegions
timeRegions) throws IOException
return -1;
}
+ private Map<byte[], Long> handleEmptyRegions(long
inactiveTransactionBound,
+ SortedSet<byte[]>
transactionalRegions,
+ Map<byte[], Long>
pruneUpperBoundRegions) throws IOException {
+ long inactiveTransactionBoundTime =
TxUtils.getTimestamp(inactiveTransactionBound);
+ SortedSet<byte[]> emptyRegions =
+
dataJanitorState.getEmptyRegionsAfterTime(inactiveTransactionBoundTime,
transactionalRegions);
+ LOG.debug("Got empty transactional regions for inactive transaction
bound time {}: {}",
+ inactiveTransactionBoundTime,
Iterables.transform(emptyRegions, TimeRegions.BYTE_ARR_TO_STRING_FN));
+
+ // The regions that are recorded as empty after
inactiveTransactionBoundTime will not have invalid data
+ // for transactions started before or on inactiveTransactionBoundTime.
Hence we can consider the prune upper bound
+ // for these empty regions as inactiveTransactionBound
+ Map<byte[], Long> pubWithEmptyRegions = new
TreeMap<>(Bytes.BYTES_COMPARATOR);
+ pubWithEmptyRegions.putAll(pruneUpperBoundRegions);
+ for (byte[] emptyRegion : emptyRegions) {
+ if (!pruneUpperBoundRegions.containsKey(emptyRegion)) {
+ pubWithEmptyRegions.put(emptyRegion, inactiveTransactionBound);
--- End diff --
Ah I see sorry misunderstood the comment.
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