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89cb0c537010e5625033014844bded7426e798d6 HBASE-25055 Add ReplicationSource for meta WALs; add enable/disable w… (#2451)
* HBASE-25055 Add ReplicationSource for meta WALs; add enable/disable when hbase:meta assigned to RS
Fill in gap left by HBASE-11183 'Timeline Consistent region replicas - Phase 2 design'.
HBASE-11183 left off implementing 'async WAL Replication' on the hbase:meta
Table; hbase:meta Table could only do Phase 1 Region Replicas reading
the primary Regions' hfiles. Here we add 'async WAL Replication' to
hbase:meta so Replicas can be more current with the primary's changes.
Adds a 'special' ReplicationSource that reads hbase:meta WAL files and replicates
all edits to the configured in-cluster endpoint (Defaults to the
RegionReadReplicaEndpoint.class -- set hbase.region.replica.catalog.replication to
target a different endpoint implementation).
Set hbase.region.replica.replication.catalog.enabled to enable async WAL
Replication for hbase:meta region replicas. Its off by default.
The CatalogReplicationSource for async WAL Replication of hbase:meta does
NOT need to keep up WAL offset or a queue of WALs-to-replicate in the
replication queue store as is done in other ReplicationSource implementations;
the CatalogReplicationSource is for Region Replicas only. General
Replication does not replicate hbase:meta. hbase:meta Region Replicas reset
on crash of the primary replica so there is no need to 'recover'
replication that was running on the crashed server.
Because it so different in operation, the CatalogReplicationSource is bolted
on to the side of the ReplicationSourceManager. It is lazily
instantiated to match the lazy instantiation of the hbase:meta
WALProvider, created and started on the open of the first Region of an
hbase:meta table. Thereafter it stays up till the process dies, even if
all hbase:meta Regions have moved off the server, in case a hbase:meta
Region is moved back (Doing this latter simplifies the implementation)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
Read configuration to see if we need to wait on setting a Region read-enabled
(if so, replicas will only flip to enable read after confirming a
flush of the primary so they for sure are a replica of a known point)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/AssignRegionHandler.java
If configured, on open of hbase:meta, ask the ReplicationSourceManager
to add a ReplicationSource (if it hasn't already).
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/RegionReplicaFlushHandler.java
Edit log message.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/UnassignRegionHandler.java
If configured, on close of hbase:meta, update ReplicationSourceManager
that a source Region has closed.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceFactory.java
javadoc and make constructor private.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceInterface.java
Add logPositionAndCleanOldLogs w/ default of the old behavior so
CatalogReplicationSource can bypass updating store with WAL position,
etc.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.java
Add creation and start of an CatalogReplicationSource.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceShipper.java
Go via ReplicationSource when calling logPostionAndCleanOldLogs so new RS can intercept.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/WALFileLengthProvider.java
Javadoc.
hbase-server/src/main/java/org/apache/hadoop/hbase/util/ServerRegionReplicaUtil.java
Add utility for reading configurations for hbase:meta region replicas.
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java
Javadoc.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestRegionReplicaReplicationEndpoint.java
Use define.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/CatalogReplicationSource.java
Specical version of ReplicationSource for Region Replicas on hbase:meta.
hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/CatalogReplicationSourcePeer.java
Needs a special peer too (peers are baked into replication though we don't use 'peers' here)
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestMetaRegionReplicaReplicationEndpoint.java
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALProvider.java
Tests.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Huaxiang Sun <huaxiangsun@apache.com>
23 files changed
