Issues incorporated and incompatible changes called out on the jira.
* Cleaned up references to HLog
* Deprecates HLogKey but maintains it for compatibility
- Moves all Writeable from WALKey to HLogKey
* Adds utility code to CoprocessorHost to help with evolving Coprocessor APIs
* RSRpcServices roll WAL call now requests the non-meta LogRoller roll all logs
- rolls actually happen asynchronously
- deprecated old api (and noted incompatible behavior change)
- modified api in new Admin interface to reflect lack of return values.
* Moved WAL user facing API to "WAL"
- only 1 sync offered
- WALTrailer removed from API
* make provider used by the WALFactory configurable.
* Move all WAL requests to use opaque ids instead of paths
* WALProvider provides API details for implementers and handles creation of WALs.
* Refactor WALActionsListener to have a basic implementation.
* turn MetricsWAL into a WALActionsListener.
* tests that needs FSHLog implementation details use them directly, others just reference provider + factory
- Some tests moved from Large to Medium based on run time.
* pull out wal disabling into its own no-op class
* update region open to delegate to WALFactory
* update performance test tool to allow for multiple regions
* Removed references to meta-specific wals within wal code
- replaced with generic suffixes
- WALFactory maintains a dedicated WALProvider for meta (and so knows about the distinction)
* maintain backwards compat on HLogPrettyPrinter and mark it deprecated.
- made WALPrettyPrinter IA.Private in favor of `bin/hbase wal`
* move WALUtil stuff that's implementation specific to said implementation
- WALUtil now acts as an integration point between the RegionServer and hte WAL code.
Incorporates contributions from v.himanshu and stack.
Conflicts:
hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/WALPlayer.java
hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
hbase-server/src/main/java/org/apache/hadoop/hbase/migration/NamespaceUpgrade.java
hbase-server/src/main/java/org/apache/hadoop/hbase/protobuf/ReplicationProtbufUtil.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/LogRoller.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/FSHLog.java
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/RegionReplicaReplicationEndpoint.java
hbase-server/src/main/java/org/apache/hadoop/hbase/util/HMerge.java
hbase-server/src/main/java/org/apache/hadoop/hbase/util/MetaUtils.java
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALSplitter.java
hbase-server/src/test/java/org/apache/hadoop/hbase/TestIOFencing.java
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAdmin2.java
hbase-server/src/test/java/org/apache/hadoop/hbase/coprocessor/TestRegionObserverScannerOpenHook.java
hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilter.java
hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestInvocationRecordFilter.java
hbase-server/src/test/java/org/apache/hadoop/hbase/fs/TestBlockReorder.java
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHLogRecordReader.java
hbase-server/src/test/java/org/apache/hadoop/hbase/mapreduce/TestImportExport.java
hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestDistributedLogSplitting.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestAtomicOperation.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionMergeTransaction.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestSplitTransaction.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestHLog.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestLogRollAbort.java
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestLogRollingNoCluster.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestMultiSlaveReplication.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationEndpoint.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationSource.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationWALEntryFilters.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRegionReplicaReplicationEndpoint.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRegionReplicaReplicationEndpointNoMaster.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationWALReaderManager.java
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestFSVisitor.java
hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestMergeTool.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestSecureWAL.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALFiltering.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALMethods.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALReaderOnSecureWAL.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALSplit.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALSplitCompressed.java
src/main/docbkx/ops_mgt.xml
In HBASE-8370 "Report data block cache hit rates apart from aggregate cache hit rates"
discussion highlights small changes in caching percentage can make for large
changes in cache contents; e.g. lots of data blocks may be getting evicited
but because meta blocks -- index and blooms -- are staying in cache with
high hit rates, a large data block eviction may show as a small change in
overall cache percentage (e.g. from 99.99 to 99.11).
Changes the getBlockCacheHitPercent from an int to a double.
Also changes name of the jmx metric blockCountHitPercent to be
blockCacheCountHitPercent instead.
May be incompatible change.
Ashish Singhi
Lars Hofhansl
Enis Soztutar
stack
Sean Busbey
Elliott Clark
Andrew Purtell
Michael Stack
liangxie
Jonathan Hsieh
ndimiduk
eclark
mbertozzi
nkeywal
Zhihong Yu