Depending on which compression codec is used, a short read of the
compressed bytes can cause catastrophic errors that confuse the WAL reader.
This problem can manifest when the reader is actively tailing the WAL for
replication. To avoid these issues when WAL value compression is enabled,
BoundedDelegatingInputStream should assume enough bytes are available to
supply a reader up to its bound. This behavior is valid per the contract
of available(), which provides an _estimate_ of available bytes, and
equivalent to IOUtils.readFully but without requiring an intermediate
buffer.
Added TestReplicationCompressedWAL and TestReplicationValueCompressedWAL.
Without the WALCellCodec change TestReplicationValueCompressedWAL will
fail.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
We introduced EnvironmentEdgeManager as a way to inject alternate clocks
for unit tests. In order for this to be effective, all callers that would
otherwise use System.currentTimeMillis() must call
EnvironmentEdgeManager.currentTime() instead, except the implementers of
EnvironmentEdge.
Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
This bug was exposed by the test from HBASE-25924. Since this wal
implementations close the wal asynchronously, replication can potentially
miss the trailer bytes. (see jira comment for detailed analysis).
While this is not a correctness problem (since trailer does not have any entry data),
it erroneously bumps a metric that is used to track skipped bytes in WAL resulting
in false alarms which is something we should avoid.
Reviewed-by: Rushabh Shah <rushabh.shah@salesforce.com>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by Anoop Sam John <anoopsamjohn@apache.org>
Undo asserts that LZ4 and SNAPPY fails if their native libs are NOT
loaded; as of hadoop 3.3.1, LZ4 and SNAPPY can work w/o native libs.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
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>
binlijin
Toshihiro Suzuki
Andrew Purtell
bsglz
Xiaolin Ha
GeorryHuang
Duo Zhang
Peter Somogyi
meiyi
xijiawen
Bharath Vissapragada
Michael Stack
Sandeep Pal
Victor
Wellington Ramos Chevreuil
Rushabh Shah
Baiqiang Zhao
Anoop Sam John
caoliqing
Pankaj
Viraj Jasani
Catalin Luca