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https://issues.apache.org/jira/browse/GEODE-5908?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16661043#comment-16661043
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ASF subversion and git services commented on GEODE-5908:
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Commit ab5fafbe188de4ffb30c0ddff926a42a713da914 in geode's branch
refs/heads/develop from Xiaojian Zhou
[ https://gitbox.apache.org/repos/asf?p=geode.git;h=ab5fafb ]
GEODE-5908: DiskStoreID.compare should compare mostSig, then leastSig (#2676)
> DiskStoreID.compare treat different DiskStoreID with same leastSig as equal
> ---------------------------------------------------------------------------
>
> Key: GEODE-5908
> URL: https://issues.apache.org/jira/browse/GEODE-5908
> Project: Geode
> Issue Type: Bug
> Components: core
> Reporter: xiaojian zhou
> Assignee: xiaojian zhou
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> When reviewing code, I found this actually is a bug, and will impact our
> checkForConflict() to throw CME in following case:
> stamps's DiskStoreID is: 5a42b9ec2e6e45db-87559e428bd3ad67
> tag's DiskStoreID is: a870e3a0126e4b0d-87559e428bd3ad67
> tag is actually bigger than stamp's. But in current code, they will be
> treated as equal.
> I wrote a junit test to reproduce this problem.
>
> The root cause is:
> *diff --git
> a/geode-core/src/main/java/org/apache/geode/internal/cache/persistence/DiskStoreID.java
>
> b/geode-core/src/main/java/org/apache/geode/internal/cache/persistence/DiskStoreID.java*
> *index 601d24899..0392e92dd 100644*
> *---
> a/geode-core/src/main/java/org/apache/geode/internal/cache/persistence/DiskStoreID.java*
> *+++
> b/geode-core/src/main/java/org/apache/geode/internal/cache/persistence/DiskStoreID.java*
> @@ -80,7 +80,7 @@ public class DiskStoreID implements
> VersionSource<DiskStoreID>, Serializable {
> return 1;
> }
> int result = Long.signum(mostSig - tagID.mostSig);
> - if (result != 0) {
> + if (result == 0) {
> result = Long.signum(leastSig - tagID.leastSig);
> }
> return result;
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