WAL storage can be expensive, especially if the cell values
represented in the edits are large, consisting of blobs or
significant lengths of text. Such WALs might need to be kept around
for a fairly long time to satisfy replication constraints on a space
limited (or space-contended) filesystem.
We have a custom dictionary compression scheme for cell metadata that
is engaged when WAL compression is enabled in site configuration.
This is fine for that application, where we can expect the universe
of values and their lengths in the custom dictionaries to be
constrained. For arbitrary cell values it is better to use one of the
available compression codecs, which are suitable for arbitrary albeit
compressible data.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
* HBASE-25875 RegionServer failed to start with IllegalThreadStateException due to race condition in AuthenticationTokenSecretManager's start & retrievePassword method
Signed-off-by: stack <stack@apache.com>
* HBASE-25867 Extra doc around ITBLL
Minor edits to a few log messages.
Explain how the '-c' option works when passed to ChaosMonkeyRunner.
Some added notes on ITBLL.
Fix whacky 'R' and 'Not r' thing in Master (shows when you run ITBLL).
In HRS, report hostname and port when it checks in (was debugging issue
where Master and HRS had different notions of its hostname).
Spare a dirty FNFException on startup if base dir not yet in place.
* Address Review by Sean
Signed-off-by: Sean Busbey <busbey@apache.org>
Revert "HBASE-25032 Wait for region server to become online before adding it to online servers in Master (#2769)"
This reverts commit 1e4639d2eb.
Conflicts:
hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
In CatalogJanitor we schedule GCRegionProcedure to clean up both
filesystem and in-memory state after a split, and
GCMultipleMergedRegionsProcedure to do the same for merges. Both of these
procedures clean up in-memory state, but CatalogJanitor also does this
redundantly just after scheduling the procedures. The cleanup should be
done in only one place. Presumably we are using the procedures to do it in
a principled way. Remove the redundancy in CatalogJanitor and fix any
follow on issues, like test failures.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Michael Stack <stack@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Processing of the RS report happens asynchronously from other activities
which can mutate region state. For example, a split procedure may already
be running. A split procedure cannot succeed if the parent region is no
longer open, so we can ignore it in that case.
Note that submitting more than one split procedure for a given region is
harmless -- the split is fenced in the procedure handling -- but it would
be noisy in the logs. Only one procedure can succeed. The other
procedure(s) would abort during initialization and report failure with
WARN level logging.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by: Pankaj <pankajkumar@apache.org>
RegionStates#getAssignmentsForBalancer is used by the HMaster to
collect all regions of interest to the balancer for the next chore
iteration. We check if a table is in disabled state to exclude
regions that will not be of interest (because disabled regions are
or will be offline) or are in a state where they shouldn't be
mutated (like SPLITTING). The current checks are not actually
comprehensive.
Filter out regions not in OPEN or OPENING state when building the
set of interesting regions for the balancer to consider. Only
regions open (or opening) on the cluster are of interest to
balancing calculations for the current iteration. Regions in all
other states can be expected to not be of interest – either offline
(OFFLINE, or FAILED_*), not subject to balancer decisions now
(SPLITTING, SPLITTING_NEW, MERGING, MERGING_NEW), or will be
offline shortly (CLOSING) – until at least the next chore
iteration.
Add TRACE level logging.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
We claim in a WARN level log line to be "Playing-it-safe skipping merge/
split gc'ing of regions from hbase:meta while regions-in-transition (RIT)"
but do not actually skip because of a missing return. Remove the warning.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Minor refactor. Make the `compactSplitThread` member field of `HRegionServer` private, and gate
all access through the getter method.
Signed-off-by: Yulin Niu <niuyulin@apache.org>
Signed-off-by: Pankaj Kumar <pankajkumar@apache.org>
Need to add to allowed-licenses list too....
Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>
Reviewed-by: Duo Zhang <zhangduo@apache.org>
Reviewed-by: Nick Dimiduk <ndimiduk@apache.org>
Xiaolin Ha
caoliqing
Andrew Purtell
Rushabh Shah
Baiqiang Zhao
Sandeep Pal
Duo Zhang
GeorryHuang
Pankaj
Viraj Jasani
Michael Stack
Catalin Luca
niuyulin
Nick Dimiduk
haxiaolin
Toshihiro Suzuki