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https://issues.apache.org/jira/browse/HBASE-14070?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090298#comment-16090298
]
Hudson commented on HBASE-14070:
--------------------------------
FAILURE: Integrated in Jenkins build HBASE-14070.HLC #69 (See
[https://builds.apache.org/job/HBASE-14070.HLC/69/])
HBASE-14070 - Core HLC (Sai Teja Ranuva) Rebased by Amit Patel (appy: rev
d53fbc74ba6e3b4489b82bb48ced6dfe470c8b10)
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/NormalUserScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/RawScanQueryMatcher.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/MockRegionServerServices.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestCopyTable.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/querymatcher/TestCompactionScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Region.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDefaultMemStore.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegionReplayEvents.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestWALLockup.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/ModifyTableProcedure.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/HTableDescriptor.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptor.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionSplitPolicy.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java
* (add) hbase-common/src/main/java/org/apache/hadoop/hbase/ClockType.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestTableName.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/MinorCompactionScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/ScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/DropDeletesCompactionScanQueryMatcher.java
* (add) hbase-common/src/main/java/org/apache/hadoop/hbase/TimestampType.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/AbstractTestWALReplay.java
* (add) hbase-common/src/test/java/org/apache/hadoop/hbase/TestClock.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/querymatcher/TestUserScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/LegacyScanQueryMatcher.java
* (add) hbase-common/src/main/java/org/apache/hadoop/hbase/Clock.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/security/access/AccessController.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreScanner.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java
* (add)
hbase-server/src/test/java/org/apache/hadoop/hbase/TestClockWithCluster.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompactingMemStore.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/StripeCompactionScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/MajorCompactionScanQueryMatcher.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestCellACLWithMultipleVersions.java
* (edit)
hbase-common/src/main/java/org/apache/hadoop/hbase/SettableTimestamp.java
* (add)
hbase-common/src/test/java/org/apache/hadoop/hbase/TestTimestampType.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestCoprocessorScanPolicy.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestIncrementTimeRange.java
HBASE-14070 Undoing the use of master's timestamp for meta updates (Sai (appy:
rev 7a42c38ef9b0c2cbcb82d516767b4f308551d712)
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/util/HBaseFsckRepair.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/TestMetaTableAccessor.java
* (edit)
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestHBaseFsckReplicas.java
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStateStore.java
* (edit)
hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
> Hybrid Logical Clocks for HBase
> -------------------------------
>
> Key: HBASE-14070
> URL: https://issues.apache.org/jira/browse/HBASE-14070
> Project: HBase
> Issue Type: New Feature
> Reporter: Enis Soztutar
> Assignee: Amit Patel
> Attachments: HBASE-14070.master.001.patch,
> HybridLogicalClocksforHBaseandPhoenix.docx,
> HybridLogicalClocksforHBaseandPhoenix.pdf
>
>
> HBase and Phoenix uses systems physical clock (PT) to give timestamps to
> events (read and writes). This works mostly when the system clock is strictly
> monotonically increasing and there is no cross-dependency between servers
> clocks. However we know that leap seconds, general clock skew and clock drift
> are in fact real.
> This jira proposes using Hybrid Logical Clocks (HLC) as an implementation of
> hybrid physical clock + a logical clock. HLC is best of both worlds where it
> keeps causality relationship similar to logical clocks, but still is
> compatible with NTP based physical system clock. HLC can be represented in
> 64bits.
> A design document is attached and also can be found here:
> https://docs.google.com/document/d/1LL2GAodiYi0waBz5ODGL4LDT4e_bXy8P9h6kWC05Bhw/edit#
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