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Allow number of commit log buckets to be increased

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Also increases the number of commit log buckets on alpha to 397 and correspondingly
reduces the frequency of commit log diff exporting to once every 3 minutes.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=191440586
This commit is contained in:
mcilwain 2018-04-03 07:58:58 -07:00 • committed by Ben McIlwain
parent 951ba78cef
commit 377fe5f573
4 changed files with 109 additions and 9 deletions
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12
java/google/registry/backup/ExportCommitLogDiffAction.java
View file

@ -14,6 +14,7 @@
package google.registry.backup;
import static com.google.common.base.MoreObjects.firstNonNull;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Verify.verifyNotNull;
import static com.google.common.collect.ImmutableList.toImmutableList;
@ -175,10 +176,13 @@ public final class ExportCommitLogDiffAction implements Runnable {
@Nullable CommitLogCheckpoint lowerCheckpoint,
CommitLogCheckpoint upperCheckpoint,
int bucketNum) {
// If no lower checkpoint exists, use START_OF_TIME as the effective exclusive lower bound.
DateTime lowerCheckpointBucketTime = lowerCheckpoint == null
? START_OF_TIME
: lowerCheckpoint.getBucketTimestamps().get(bucketNum);
// If no lower checkpoint exists, or if it exists but had no timestamp for this bucket number
// (because the bucket count was increased between these checkpoints), then use START_OF_TIME
// as the effective exclusive lower bound.
DateTime lowerCheckpointBucketTime =
firstNonNull(
(lowerCheckpoint == null) ? null : lowerCheckpoint.getBucketTimestamps().get(bucketNum),
START_OF_TIME);
// Since START_OF_TIME=0 is not a valid id in a key, add 1 to both bounds. Then instead of
// loading lowerBound < x <= upperBound, we can load lowerBound <= x < upperBound.
DateTime lowerBound = lowerCheckpointBucketTime.plusMillis(1);