There were a couple of issues.
- There was a leak of a file descriptor for hbck lock file. This
was contributing to all the "ConnectionRefused" stack traces since
it was trying to renew lease for an already expired mini dfs cluster.
This issue was there for a while, just that we noticed it now.
- After upgrade to JUnit 4.13, it looks like the behavior for test
timeouts has changed. Earlier the timeout seems to have applied for
each parameterized run, but now it looks like it is applied across
all the runs.
This patch fixes both the issues.
Signed-off-by: Stack <stack@apache.org>
Signed-off-by: Jan Hentschel <jan.hentschel@ultratendency.com>
Implements a master based registry for clients.
- Supports hedged RPCs (fan out configured via configs).
- Parameterized existing client tests to run with multiple registry combinations.
- Added unit-test coverage for the new registry implementation.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: stack <stack@apache.org>
Signed-off-by: Andrew Purtell <apurtell@apache.org>
* HBASE-23604: Cleanup AsyncRegistry interface
- Cleans up the method names to make more sense and adds a little
more javadocs for context. In future patches we can revisit
the name of the actual class to make it more self explanatory.
- Does AsyncRegistry -> ConnectionRegistry rename.
"async" ness of the registry is kind of implicit based on
the interface contents and need not be reflected in the name.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: stack <stack@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
* HBASE-23304: RPCs needed for client meta information lookup
This patch implements the RPCs needed for the meta information
lookup during connection init. New tests added to cover the RPC
code paths. HBASE-23305 builds on this to implement the client
side logic.
Fixed a bunch of checkstyle nits around the places the patch
touches.
Signed-off-by: Andrew Purtell <apurtell@apache.org>
* HBASE-23281: Track meta region changes on masters
This patch adds a simple cache that tracks the meta region replica
locations. It keeps an eye on the region movements so that the
cached locations are not stale.
This information is used for servicing client RPCs for connections
that use master based registry (HBASE-18095). The RPC end points
will be added in a separate patch.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
* HBASE-23275: Track active master's address in ActiveMasterManager
Currently we just track whether an active master exists.
It helps to also track the address of the active master in
all the masters to help serve the client RPC requests to
know which master is active.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: Andrew Purtell <apurtell@apache.org>
- MOB compaction is now handled in-line with per-region compaction on region
servers
- regions with mob data store per-hfile metadata about which mob hfiles are
referenced
- admin requested major compaction will also rewrite MOB files; periodic RS
initiated major compaction will not
- periodically a chore in the master will initiate a major compaction that
will rewrite MOB values to ensure it happens. controlled by
'hbase.mob.compaction.chore.period'. default is weekly
- control how many RS the chore requests major compaction on in parallel
with 'hbase.mob.major.compaction.region.batch.size'. default is as
parallel as possible.
- periodic chore in master will scan backing hfiles from regions to get the
set of referenced mob hfiles and archive those that are no longer
referenced. control period with 'hbase.master.mob.cleaner.period'
- Optionally, RS that are compacting mob files can limit write
amplification by not rewriting values from mob hfiles over a certain size
limit. opt-in by setting 'hbase.mob.compaction.type' to 'optimized'.
control threshold by 'hbase.mob.compactions.max.file.size'.
default is 1GiB
- Should smoothly integrate with existing MOB users via rolling upgrade.
will delay old MOB file cleanup until per-region compaction has managed
to compact each region at least once so that used mob hfile metadata can
be gathered.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncMetaRegionLocator.java
Add wait on no region in transition in setup before proceeding.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncResultScannerCursor.java
Make test large. Takes longer than 50seconds.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableRSCrashPublish.java
Make large because it fails when networking is weird... when VPN or
something is up. See HBASE-23850. When large, doesn't get run
when you do mvn test.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestAsyncTableScanAll.java
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestScannersFromClientSide2.java
hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestMultiRowRangeFilter.java
hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/TestStochasticLoadBalancerRegionReplica.java
Make it large. Takes too long.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSeparateClientZKCluster.java
Use data dir instead of /tmp.
M hbase-server/src/test/java/org/apache/hadoop/hbase/http/TestInfoServersACL.java
Wait till mbean is up before proceeding w/ test.
hbase-server/src/test/java/org/apache/hadoop/hbase/security/token/SecureTestCluster.java
Test for null CLUSTER in tearDown.
* hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/snapshot/ExportSnapshot.java
Add logging of temp output dir and if tmp dir is being used at all.
* hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshot.java
Don't create new Configurations. Use current. Set it into the launched
ExportSnapshot too. Log as we make progress through stages so easier to
find location of exception source.
* hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshotV1NoCluster.java
Add makeQualified though looks to be redundant.
* hbase-server/src/test/java/org/apache/hadoop/hbase/http/TestInfoServersACL.java
Might fix a local fail where hbase doesn't seem to be up when we query
jmx. Wait on meta being online.
M hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestRegionStateStore.java
Run all on the one cluster instance. See if helps w/ odd failure when
run locally.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: Zach York <zyork@apache.org>
* TestFullLogReconstruction log the server we've chosen to expire and then note where we starting counting rows
* TestAsyncTableScanException use a define for row counts
* TestRawAsyncTableLimitedScanWithFilter check connection was made before closing it in tearDown
* TestLogsCleaner use single mod time. Make it for sure less than now in case test runs all in the same millisecond (would cause test fail)
* TestReplicationBase test table is non-null before closing in tearDown
This is causing me issues with parallel test runs.
Also allow setting the surefire reports and temp directories via command line.
Signed-off-by: stack <stack@apache.org>
These classifications come of running at various fork counts.. A test
may complete quick if low fork count but if it is accessing disk, it
will run much slower if fork count is high. This edit accommodates
some of this phenomenon.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by: Jan Hentschel <janh@apache.org>
The Hadoop AccessControlList allows us to specify admins of the webUI
via a list of users and/or groups. Admins of the WebUI can mutate the
system, potentially seeing sensitive data or modifying the system.
hbase.security.authentication.spnego.admin.users is a comma-separated
list of users who are admins.
hbase.security.authentication.spnego.admin.groups is a comma-separated
list of groups whose membership are admins. Either of these
configuration properties may also contain an asterisk (*) which denotes
"any entity" (e.g user, group).
Previously, when a user was denied from some endpoint that was
designated for admins, they received an HTTP/401. In this case, it is
more correct to return HTTP/403 as they were correctly authenticated,
but they were disallowed from fetching the given resource. This commit
incorporates this change.
hbase.security.authentication.ui.config.protected also exists for users
who have sensitive information stored in the Hadoop service
configuration and want to limit access to this endpoint. By default,
the Hadoop configuration endpoint is not protected and any
authenticated user can access it.
The test is based off of work by Nihal Jain in HBASE-20472.
Co-authored-by: Nihal Jain <nihaljain.cs@gmail.com>
Signed-off-by: Sean Busbey <busbey@apache.org>
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
hbase-client/src/main/java/org/apache/hadoop/hbase/HRegionInfo.java
hbase-server/src/main/java/org/apache/hadoop/hbase/executor/EventHandler.java
Complains about mismatch in types when Compare. Implement Compare in
base Interface.
hbase-client/src/main/java/org/apache/hadoop/hbase/protobuf/ProtobufUtil.java
Complains pbs never return null.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSinkManager.java
Needed redo because errorprone complains can't mock Service from guava.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionReplicasWithRestartScenarios.java
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestSnapshotScannerHDFSAclController.java
Unrelated...adding one-liner debug statements chasing other test
failures.
HBASE-21345 - [hbck2] Allow version check to proceed even though master is 'initializing'.
Just remove the check state from the getClusterStatus call.
Signed-off-by: Michael Stack <stack@apache.org>
Signed-off-by: Peter Somogyi <psomogyi@apache.org>
Signed-off-by: Sakthi <sakthi@apache.org>
(cherry picked from commit dd8496a546)
Set encoding and blooms on meta as default. Also shutdown access to the
initial meta schema creating method; get from TableDescriptors if you
need access to schema or edit it as you would any other table if you
want to edit it.
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Codecs don't have access to what CellComparator to use. Backfill.
M hbase-common/src/main/java/org/apache/hadoop/hbase/CellComparator.java
Adds a new compareRows with default implementation that takes a ByteBuffer.
Needed by the index in a block encoder implementation.
M hbase-common/src/main/java/org/apache/hadoop/hbase/CellComparatorImpl.java
Adds implementation for meta of new compareRows method. Adds utility
method for figuring comparator based off tablename.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/AbstractDataBlockEncoder.java
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/BufferedDataBlockEncoder.java
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/RowIndexCodecV1.java
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/RowIndexSeekerV1.java
Comparator is in context. Remove redundant handling.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/DataBlockEncoder.java
Comparator is in context. Remove redundant handling. Clean javadoc.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.java
Clean javadoc.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/encoding/RowIndexEncoderV1.java
Cache context so can use it to get comparator to use later.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileContext.java
Cache cellcomparator to use. Javdoc on diff between HFileContext and
HFileInfo.
M hbase-common/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileContextBuilder.java
Add CellComparator
M hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/HFileOutputFormat2.java
M hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java
M hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderImpl.java
M hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterImpl.java
M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileWriter.java
Remove comparator caching. Get from context instead.
M hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java
Skip a reflection if we can.
M hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileInfo.java
Javadoc. Removed unused filed.
Signed-off-by: Anoop Sam John <anoopsamjohn@apacher.org>
Signed-off-by: Ramkrishna <ramkrishna.s.vasudevan@intel.com>
Signed-off-by: Jan Hentschel <janh@apache.org>
Make hbase:meta region schema dynamic.
Patch has been under development a good while and its focus has changed
a few times so its bloated with fixup from older versions.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/TableStateManager.java
M hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZNodePaths.java
Shut down access to internals and removed unused methods.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/EnableTableProcedure.java
Cleanup/refactor section on replica-handling.
M hbase-server/src/main/java/org/apache/hadoop/hbase/util/FSTableDescriptors.java
Get hbase:meta schema from filesystem rather than from hard-coding.
Adds a display of the content of 'hbase:meta' to the Master's
table.jsp, when that table is selected. Supports basic pagination,
filtering, &c.
Signed-off-by: stack <stack@apache.org>
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Decouple the HBase internals such that someone can implement
their own SASL-based authentication mechanism and plug it into
HBase RegionServers/Masters.
Comes with a design doc in dev-support/design-docs and an example in
hbase-examples known as "Shade" which uses a flat-password file
for authenticating users.
Closes#884
Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
Signed-off-by: Andrew Purtell <apurtell@apache.org>
Signed-off-by: Reid Chan <reidchan@apache.org>
The current process for an operator, after fixing holes in meta, is to
manually disable and enable the whole table. Let's try to avoid
bringing the whole table offline if we can. Have the master attempt to
queue up assignment procedures for any new regions it creates.
Signed-off-by: stack <stack@apache.org>
The cleanupBulkLoad method is only called for the first Region in the
table which was being bulk loaded into. This means that potentially N-1
other RegionServers (where N is the number of RegionServers) will leak
one FileSystem object into the FileSystem cache which will never be
cleaned up. We need to do this clean-up as a part of secureBulkLoadHFiles
otherwise we cannot guarantee that heap usage won't grow unbounded.
Closes#1029
Signed-off-by: Sean Busbey <busbey@apache.org>
Make it so hbase:meta can be altered. TableState for hbase:meta
was hardcoded ENABLED. Make it dynamic. State is now kept in
current active Master. It is transient so falls back to default
if Master crashes. Add to registry a getMetaTableState
which reads mirrored state from zookeeper (NOT from Master and
defaults ENABLED if no implementation or error fetching state).
hbase:meta schema will be bootstrapped from the filesystem.
Changes to filesystem schema are atomic so we should be ok if
Master fails mid-edit (TBD). Undoes a bunch of guards that
prevented our being able to edit hbase:meta.
TODO: Tests, more clarity around hbase:meta table state, and undoing
references to hard-coded hbase:meta regioninfo.
M hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
Throw illegal access exception if you try to use MetaTableAccessor
getting state of the hbase:meta table.
M hbase-client/src/main/java/org/apache/hadoop/hbase/client/ConnectionImplementation.java
Add fetching of hbase:meta table state from registry. Adds cache of
tablestates w/ a ttl of 1 second (adjustable).
M hbase-client/src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
M hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
Add querying registry for hbase:meta table state.
M hbase-client/src/main/java/org/apache/hadoop/hbase/client/ZKAsyncRegistry.java
Add querying of mirrored table state for hbase:meta table.
M hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZNodePaths.java
Shutdown access.
M hbase-server/src/main/java/org/apache/hadoop/hbase/TableDescriptors.java
Just cleanup.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/TableStateManager.java
Add state holder for hbase:meta. Removed unused methods.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStateStore.java
Shut down access.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/DisableTableProcedure.java
Allow hbase:meta to be disabled.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/EnableTableProcedure.java
Allow hbase:meta to be enabled.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Master force-closes unknown/incorrect Regions OPEN on RS
M hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java
Added a note and small refactor.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/CatalogJanitor.java
Fix an NPE when CJ ran.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java
Minor clean up of log message; make it clearer.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
Make it so closeRegionSilentlyAndWait can be used w/o timeout.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignmentManager.java
If a RegionServer Report notes a Region is OPEN and the Master does not
know of said Region, close it (We used to crash out the RegionServer)
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStateNode.java
Minor tweak of toString -- label should be state, not rit (confusing).
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionStates.java
Doc.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/TransitRegionStateProcedure.java
Add region name to exception.
M hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/HBCKServerCrashProcedure.java
Be more careful about which Regions we queue up for reassign. This
procedure is run by the operator so could happen at any time. We
will likely be running this when Master has some accounting of
cluster members so check its answers for what Regions were on
server before running.
M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
Doc and we were misrepresenting the case where a Region as not in RIT
when we got CLOSE -- we were reporting it as though it was already
trying to CLOSE.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Lijin Bin <binlijin@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Change its behavior so it will only look in hbase:meta
if the call to the super class turns up zero references.
Only then will it search hbase:meta for references to
'Unknown Servers'. Normal operation where we read Master
context is usual and sufficient. The scan of hbase:meta
is only for case where Master state has been corrupted
and we need to clear out 'Unknown Servers'.
Having it as static means the test cannot be parameterized (ran into
this issue in HBASE-23305). That happens because the field is not
reset between parameterized runs.
* Adds a new MapReduce job that builds a report of health of mob files
* Also builds background information on mob system use
* add a basic mob architecture in the ref guide to explain how mob takes the reference hfile value and finds the actual cell contents
* add a troubleshooting mob section to the ref guide to explain how to do a mob reference scan.
Signed-off-by: Peter Somogyi <psomogyi@apache.org>
* Clean up JavaDocs
* Clean up logging and error messages
* Remove superfluous code
* Replace static code with library call
* Do not swallow Interrupted Exceptions
* Use try-with-resources
* User multi-Exception catches to reduce code size
Signed-off-by: Jan Hentschel <janh@apache.org>
Signed-off-by: Sean Busbey <busbey@apache.org>
Removes a bunch of dead code and fixes some checkstyle nits.
Signed-off-by: Viraj Jasani <virajjasani007@gmail.com>
Signed-off-by: Sean Busbey <busbey@apache.org>
* Handling the BAD value in info:state columns in hbase:meta
* Adding a unit test and region encoded name in the LOG
* Adding a null check for region state to complete the test scenario and fixing the nit
Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
Signed-off-by: GuangxuCheng <guangxucheng@gmail.com>
Signed-off-by: stack <stack@apache.org>
All the clients need to know the master RPC end points while using master
based registry for creating cluster connections. This patch amends the
test cluster utility to populate these configs in the base configuration
object used to spin up the cluster.
The config key added here ("hbase.master.addrs") is used in the subsequent
patches for HBASE-18095.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
* Add a bit of javadoc around SerialReplicationChecker.
* Miniscule edit to the profiler jsp page and then a bit of doc on how to make it work that might help.
* Add some detail if NPE getting BitSetNode to help w/ debug.
* Change HbckChore to log region names instead of encoded names; helps doing diagnostics; can take region name and query in shell to find out all about the region according to hbase:meta.
* Add some fix-it help inline in the HBCK Report page – how to fix.
* Add counts in procedures page so can see if making progress; move listing of WALs to end of the page.
Have the existing scheduleRecoveries launch a new HBCKSCP
instead of SCP. It gets regions to recover from Master
in-memory context AND from a scan of hbase:meta. This
new HBCKSCP is For processing 'Unknown Servers', servers that
are 'dead' and purged but still have references in
hbase:meta. Rare occurance but needs tooling to address.
Later have catalogjanitor take care of these deviations
between Master in-memory and hbase:meta content (usually
because of overdriven cluster with failed RPCs to hbase:meta,
etc)
Changed expireServers in ServerManager so could pass in
custom reaction to expired server.... This is how we
run our custom HBCKSCP while keeping all other aspects
of expiring services (rather than try replicate it
externally).
This patch implements a simple cache that all the masters
can lookup to serve cluster ID to clients. Active HMaster
is still responsible for creating it but all the masters
will read it from fs to serve clients.
RPCs exposing it will come in a separate patch as a part of
HBASE-18095.
Signed-off-by: Andrew Purtell <apurtell@apache.org>
Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
Signed-off-by: Guangxu Cheng <guangxucheng@gmail.com>
* Clean up a bunch of private variable leakage into other
classes. Reduces visibility as much as possible, providing getters
where access remains necessary or making use of getters that
already exist. There remains an insidious relationship between
`HRegionServer` and `RSRpcServices`.
* Rename `fs` to `dataFs`, `rootDir` as `dataRootDir` so as to
distinguish from the new `walFs`, `walRootDir` (and make it easier
to spot bugs).
* Cleanup or delete a bunch of lack-luster javadoc comments.
* Delete a handful of methods that are unused according to static
analysis.
* Reduces the warning count as reported by IntelliJ from 100 to 7.
Signed-off-by: stack <stack@apache.org>
Signed-off-by: Sean Busbey <busbey@apache.org>
(cherry picked from commit 577db5d7e5 - Test only, removed changes from no more exisiting ScannerCallableWithReplicas class)
Removes the closeRegion flag added by HBASE-23181 and instead
relies on reading meta WALEdit content. Modified how qualifier is
written when the meta WALEdit is for a RegionEventDescriptor
so the 'type' is added to the qualifer so can figure type
w/o having to deserialize protobuf value content: e.g.
HBASE::REGION_EVENT::REGION_CLOSE
Added doc on WALEdit and tried to formalize the 'meta' WALEdit
type and how it works. Needs complete redo in part as suggested
by HBASE-8457. Meantime, some doc and cleanup.
Also changed the LogRoller constructor to remove redundant param.
Because of constructor change, need to change also
TestFailedAppendAndSync, TestWALLockup, TestAsyncFSWAL &
WALPerformanceEvaluation.java
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Lijin Bin <binlijin@apache.org>
Adds logging of row and complaint if consistency check fails during CJ
checking. Adds a few more null checks. Does edit on the 'HBCK Report'
top line.
Signed-off-by: Reid Chan <reidchan@apache.org>
* better logging on MOB compaction process
* HFileCleanerDelegate to optionally halt removal of mob hfiles
* use archiving when removing committed mob file after bulkload ref failure
closes#763
Signed-off-by: Wellington Chevreuil <wchevreuil@apache.org>
Signed-off-by: Balazs Meszaros <meszibalu@apache.org>
Introducing property hbase.regionserver.user.metrics.enabled(Default:true)
to disable user metrics in case it accounts for any performance issues
Close#661
Signed-off-by: Josh Elser <elserj@apache.org>
Bharath Vissapragada
stack
Vladimir Rodionov
Guanghao Zhang
GeorryHuang
Jan Hentschel
Nick Dimiduk
maoling
meiyi
binlijin
Mark Robert Miller
Duo Zhang
Michael Stack
abhinaba.sarkar
Josh Elser
Viraj Jasani
Jan Hentschel
Geoffrey Jacoby
Wellington Ramos Chevreuil
Peter Somogyi
dingbaosheng
WenFeiYi
belugabehr
Aman Poonia
Yiran Wu
chenxu14
BukrosSzabolcs
Toshihiro Suzuki
Sean Busbey
Ankit Singhal
ramkrish86
David Mollitor
ramkrish86
Sandeep Pal
Lars Hofhansl
Karthik Palanisamy
Junegunn Choi
XinSun
Viraj Jasani
xuqinya1
Karthik Palanisamy
bsglz
Baiqiang Zhao
Udai Bhan Kashyap
lijinbin
ravowlga123
Ankit Singhal
Pierre Zemb
Andrew Purtell
Caroline Zhou