Avoid the pattern where a Random object is allocated, used once or twice, and
then left for GC. This pattern triggers warnings from some static analysis tools
because this pattern leads to poor effective randomness. In a few cases we were
legitimately suffering from this issue; in others a change is still good to
reduce noise in analysis results.
Use ThreadLocalRandom where there is no requirement to set the seed to gain
good reuse.
Where useful relax use of SecureRandom to simply Random or ThreadLocalRandom,
which are unlikely to block if the system entropy pool is low, if we don't need
crypographically strong randomness for the use case. The exception to this is
normalization of use of Bytes#random to fill byte arrays with randomness.
Because Bytes#random may be used to generate key material it must be backed by
SecureRandom.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
The code starting at `ZKUtil.dump(ZKWatcher)` is a small mess – it has cyclic dependencies woven
through itself, `ZKWatcher` and `RecoverableZooKeeper`. It also initializes a static variable in
`ZKUtil` through the factory for `RecoverableZooKeeper` instances. Let's decouple and clean it
up.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Josh Elser <elserj@apache.org>
This refactor reduces the size and scope of the `ZKUtil` class. The core of this refactor is
moving the `login*` methods from `ZKUtil` into their own class, `ZKAuthentication`. The class
`JaasConfiguration` is also moved along with them.
Signed-off-by: Andrew Purtell <apurtell@apache.org>
Signed-off-by: Duo Zhang <zhangduo@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>
Starting ZOOKEEPER-2251, client requests exceeding a timeout can throw
a KeeperException with REQUESTTIMEOUT opcode set. RecoverableZookeeper
doesn't transparently retry in such cases.
Reviewed-by: Rushabh Shah <rushabh.shah@salesforce.com>
Signed-off-by: Michael Stack <stack@apache.org>
Network identities should be bound late. Remote addresses should be
resolved at the last possible moment, just before connect(). Network
identity mappings can change, so our code should not inappropriately
cache them. Otherwise we might miss a change and fail to operate normally.
Revert "HBASE-14544 Allow HConnectionImpl to not refresh the dns on errors"
Removes hbase.resolve.hostnames.on.failure and related code. We always
resolve hostnames, as late as possible.
Preserve InetSocketAddress caching per RPC connection. Avoids potential
lookups per Call.
Replace InetSocketAddress with Address where used as a map key. If we want
to key by hostname and/or resolved address we should be explicit about it.
Using Address chooses mapping by hostname and port only.
Add metrics for potential nameservice resolution attempts, whenever an
InetSocketAddress is instantiated for connect; and metrics for failed
resolution, whenever InetSocketAddress#isUnresolved on the new instance
is true.
* Use ServerName directly to build a stub key
* Resolve and cache ISA on a RpcChannel as late as possible, at first call
* Remove now invalid unit test TestCIBadHostname
We resolve DNS at the latest possible time, at first call, and do not
resolve hostnames for creating stubs at all, so this unit test cannot
work now.
Reviewed-by: Mingliang Liu <liuml07@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Editing logging around region replicas: shortening and adding context.
Checkstyle fixes in edited files while I was in there.
Signed-off-by: Duo Zhang <zhangduo@apache.org>
This patch adds the ability to discover newly added masters
dynamically on the master registry side. The trigger for the
re-fetch is either periodic (5 mins) or any registry RPC failure.
Master server information is cached in masters to avoid repeated
ZK lookups.
Updates the client side connection metrics to maintain a counter
per RPC type so that clients have visibility into counts grouped
by RPC method name.
I didn't add the method to ZK registry interface since there
is a design discussion going on in splittable meta doc. We can
add it later if needed.
Signed-off-by: Nick Dimiduk <ndimiduk@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Also fix three bugs:
* We were trying to delete non-empty directory; weren't doing
accounting for meta WALs where meta had moved off the server
(successfully)
* We were deleting split WALs rather than archiving them.
* We were not handling corrupt files.
Deprecations and removal of tests of old system.
Signed-off-by: Anoop Sam John <anoopsamjohn@apache.org>
Writing a test for this is tricky. There is enough coverage for
functional tests. Only concern is performance, but there is enough
logging for it to detect timed out/badly performing sync calls.
Additionally, this patch decouples the ZK event processing into it's
own thread rather than doing it in the EventThread's context. That
avoids deadlocks and stalls of the event thread.
Signed-off-by: Andrew Purtell <apurtell@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapred/TableRecordReaderImpl.java
hbase-mapreduce/src/main/java/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.java
Cleanup checkstyle warnings. Don't depend on hbase-client
ScannerCallable.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshot.java
Cut down on cluster resource usage.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/AbstractTestDLS.java
Debug
hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController3.java
Debug
hbase-thrift/src/test/java/org/apache/hadoop/hbase/thrift/TestThriftHttpServer.java
Debug
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/MiniZooKeeperCluster.java
Debug
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java
Allow that NONEMPTY is retryable by running in series.
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/MiniZooKeeperCluster.java
Have client and server use loopback instead of 'localhost'
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Jan Hentschel <janh@apache.org>
A miscellaney. Add extra logging to help w/ debug to a bunch of tests.
Fix some issues particular where we ran into mismatched filesystem
complaint. Some modernizations, removal of unnecessary deletes
(especially after seeing tests fail in table delete), and cleanup.
Recategorized one tests because it starts four clusters in the one
JVM from medium to large. Finally, zk standalone server won't come
on occasion; added debug and thread dumping to help figure why (
manifests as test failing in startup saying master didn't launch).
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshot.java
Fixes occasional mismatched filesystems where the difference is file:// vs file:///
or we pick up hdfs schema when it a local fs test. Had to do this
vetting of how we do make qualified on a Path in a few places, not
just here as a few tests failed with this same issue. Code in here is
used by a lot of tests that each in turn suffered this mismatch.
Refactor for clarity
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshotV1NoCluster.java
Unused import.
hbase-procedure/src/test/java/org/apache/hadoop/hbase/procedure2/store/wal/TestWALProcedureStore.java
This test fails if tmp dir is not where it expects because tries to
make rootdir there. Give it a rootdir under test data dir.
hbase-server/src/test/java/org/apache/hadoop/hbase/TestZooKeeper.java
This change is probably useless. I think the issue is actually
a problem addressed later where our test for zk server being
up gets stuck and never times out.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestSplitOrMergeStatus.java
Move off deprecated APIs.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/balancer/BalancerTestBase.java
Log when we fail balance check for DEBUG Currently just says 'false'
hbase-server/src/test/java/org/apache/hadoop/hbase/master/procedure/TestSplitWALProcedure.java
NPEs on way out if setup failed.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestCompaction.java
Add logging when assert fails to help w/ DEBUG
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionServerAbortTimeout.java
Don't bother removing stuff on teardown. All gets thrown away anyways.
Saw a few hangs in here in the teardown where hdfs was down before
expected messing up shutdown.
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/MiniZooKeeperCluster.java
Add timeout on socket; was seeing check for zk server getting stuck
and never timing out (test time out in startup)
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/snapshot/TestExportSnapshotWithTemporaryDirectory.java
Write to test data dir instead.
Be careful about how we make qualified paths.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatScanBase.java
Remove snowflake configs.
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationStatus.java
Add a hacky pause. Tried adding barriers but didn't work. Needs deep
dive.
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/MiniZooKeeperCluster.java
Remove code copied from zk and use zk methods directly instead.
A general problem is that zk cluster doesn't come up occasionally but
no clue why. Add thread dumping and state check.
Nick Dimiduk
Duo Zhang
Andrew Purtell
GeorryHuang
litao
Bharath Vissapragada
Anoop Sam John
Josh Elser
Laxman Goswami
Qi Yu
Michael Stack
WenFeiYi
Viraj Jasani
Mohammad Arshad
Mohammad Arshad
stack
Jianfei Jiang