HADOOP-16202 "Enhance openFile()" added asynchronous draining of the
remaining bytes of an S3 HTTP input stream for those operations
(unbuffer, seek) where it could avoid blocking the active
thread.
This patch fixes the asynchronous stream draining to work and so
return the stream back to the http pool. Without this, whenever
unbuffer() or seek() was called on a stream and an asynchronous
drain triggered, the connection was not returned; eventually
the pool would be empty and subsequent S3 requests would
fail with the message "Timeout waiting for connection from pool"
The root cause was that even though the fields passed in to drain() were
converted to references through the methods, in the lambda expression
passed in to submit, they were direct references
operation = client.submit(
() -> drain(uri, streamStatistics,
false, reason, remaining,
object, wrappedStream)); /* here */
Those fields were only read during the async execution, at which
point they would have been set to null (or even a subsequent read).
A new SDKStreamDrainer class peforms the draining; this is a Callable
and can be submitted directly to the executor pool.
The class is used in both the classic and prefetching s3a input streams.
Also, calling unbuffer() switches the S3AInputStream from adaptive
to random IO mode; that is, it is considered a cue that future
IO will not be sequential, whole-file reads.
Contributed by Steve Loughran.
The JournalNodeSyncer will include the local instance in syncing when using a bind host (e.g. 0.0.0.0). There is a mechanism that is supposed to exclude the local instance, but it doesn't recognize the meta-address as a local address.
Running with bind addresses set to 0.0.0.0, the JournalNodeSyncer will log attempts to sync with itself as part of the normal syncing rotation. For an HA configuration running 3 JournalNodes, the "other" list used by the JournalNodeSyncer will include 3 proxies.
Exclude bound local addresses, including the use of a wildcard address in the bound host configurations, while still allowing multiple instances on the same host.
Allow sync attempts with unresolved addresses, so that sync attempts can drive resolution as servers become available.
Backport.
Signed-off-by: stack <stack@apache.org>
Declares its compatibility with Spark's dynamic
output partitioning by having the stream capability
"mapreduce.job.committer.dynamic.partitioning"
Requires a Spark release with SPARK-40034, which
does the probing before deciding whether to
accept/rejecting instantiation with
dynamic partition overwrite set
This feature can be declared as supported by
any other PathOutputCommitter implementations
whose algorithm and destination filesystem
are compatible.
None of the S3A committers are compatible.
The classic FileOutputCommitter is, but it
does not declare itself as such out of our fear
of changing that code. The Spark-side code
will automatically infer compatibility if
the created committer is of that class or
a subclass.
Contributed by Steve Loughran.
This addresses an issue where the plugin's default classpath
for executing tests fails to include
org.junit.platform.launcher.core.LauncherFactory.
Contributed by: Steve Vaughan Jr
Use the existing DomainNameResolver to leverage the pluggable resolution framework. This provides a means to perform a reverse lookup if needed.
Update default implementation of DNSDomainNameResolver to protect against returning the IP address as a string from a cached value.
Co-authored-by: Steve Vaughan Jr <s_vaughan@apple.com>
Back port to branch-3.3, to avoid reconnecting to the old address after detecting that the address has been updated.
* Use a stable hashCode to allow safe IP addr changes
* Add test that updated address is used
Once the address has been updated, it will be used in future calls. Test verifies that a second request succeeds and that it uses the existing updated address instead of having to re-resolve.
Co-authored-by: Steve Vaughan Jr <s_vaughan@apple.com>
JobID.toString() and TaskID.toString() to only be called
when the IDs are not null.
This doesn't surface in MapReduce, but Spark SQL can trigger
in job abort, where it may invoke abortJob() with an
incomplete TaskContext.
This patch MUST be applied to branches containing
HADOOP-17833. "Improve Magic Committer Performance."
Contributed by Steve Loughran.
The name of the option to enable/disable thread level statistics is
"fs.iostatistics.thread.level.enabled";
There is also an enabled() probe in IOStatisticsContext which can
be used to see if the thread level statistics is active.
Contributed by Viraj Jasani
* HADOOP-18321.Fix when to read an additional record from a BZip2 text file split
Co-authored-by: Ashutosh Gupta <ashugpt@amazon.com> and Reviewed by Akira Ajisaka.
(cherry picked from commit a432925f74)
Fixes CVE-2018-7489 in shaded jackson.
+Add more commands in testing.md
to the CLI tests needed when qualifying
a release
Contributed by Steve Loughran
This adds a thread-level collector of IOStatistics, IOStatisticsContext,
which can be:
* Retrieved for a thread and cached for access from other
threads.
* reset() to record new statistics.
* Queried for live statistics through the
IOStatisticsSource.getIOStatistics() method.
* Queries for a statistics aggregator for use in instrumented
classes.
* Asked to create a serializable copy in snapshot()
The goal is to make it possible for applications with multiple
threads performing different work items simultaneously
to be able to collect statistics on the individual threads,
and so generate aggregate reports on the total work performed
for a specific job, query or similar unit of work.
Some changes in IOStatistics-gathering classes are needed for
this feature
* Caching the active context's aggregator in the object's
constructor
* Updating it in close()
Slightly more work is needed in multithreaded code,
such as the S3A committers, which collect statistics across
all threads used in task and job commit operations.
Currently the IOStatisticsContext-aware classes are:
* The S3A input stream, output stream and list iterators.
* RawLocalFileSystem's input and output streams.
* The S3A committers.
* The TaskPool class in hadoop-common, which propagates
the active context into scheduled worker threads.
Collection of statistics in the IOStatisticsContext
is disabled process-wide by default until the feature
is considered stable.
To enable the collection, set the option
fs.thread.level.iostatistics.enabled
to "true" in core-site.xml;
Contributed by Mehakmeet Singh and Steve Loughran
This downgrades jackson from the version switched to in
HADOOP-18033 (2.13.0), to Jackson 2.12.7.
This removes the dependency on javax.ws.rs-api,
so avoiding runtime problems with applications using
jersey-core v1 and/or jsr311-api.
The 2.12.7 release still contains the fix for CVE-2020-36518.
Contributed by PJ Fanning
Partial/Incomplete groups list can be returned in LDAP groups lookup.
Backported in #4550; minor tuning of parameters needed.
Contributed by larry mccay
Mukund Thakur
Steve Loughran
Masatake Iwasaki
Steve Vaughan
zhengchenyu
Simba Dzinamarira
xuzq
Ayush Saxena
Wei-Chiu Chuang
jianghuazhu
Viraj Jasani
Ashutosh Gupta
kevins-29
huaxiangsun
Yubi Lee
ahmarsuhail
Mehakmeet Singh
skysiders
ashutoshpant
PJ Fanning
lmccay