Replicated operation consist of a routing action (the original), which is in charge of sending the operation to the primary shard, a primary action which executes the operation on the resolved primary and replica actions which performs the operation on a specific replica. This commit adds the targeted shard's allocation id to the primary and replica actions and makes sure that those match the shard the actions end up executing on.
This helps preventing extremely rare failure mode where a shard moves off a node and back to it, all between an action is sent and the time it's processed.
For example:
1) Primary action is sent to a relocating primary on node A.
2) The primary finishes relocation to node B and start relocating back.
3) The relocation back gets to the phase and opens up the target engine, on the original node, node A.
4) The primary action is executed on the target engine before the relocation finishes, at which the shard copy on node B is still the official primary - i.e., it is executed on the wrong primary.
When removing a plugin with a config directory, we preserve the config
directory. This is because the workflow for upgrading a plugin involves
removing and then installing the plugin again and losing the plugin
config in this case would be terrible. This commit causes a message
regarding this to be printed in case the user wants to manually delete
these files.
This commit removes a line-length violation in RemovePluginCommand.java
and removes this file from the list of files for which the line-length
check is suppressed.
We have intentionally introduced leniency for ThrowableProxy from Log4j
to work around a bug there. Yet, a test for this introduced leniency was
not addded. This commit introduces such a test.
Relates #20329
Previously we had an exemption for Joda-Time BaseDateTime because we
forked this class to remove the usage of a volatile field. This hack is
no longer in place, so the exemption is no longer necessary. This commit
removes that exemption.
Relates #20328
The BackgroundIndexer now uses auto-generated IDs randomly. This causes some problems
for tests that still rely on the fact that the IDs are increasing integers. This change
exposes all IDs via a Set<String> to iterate over for tests.
A warning was introduced if old log config files are present (e.g.,
logging.yml). However, this check is executed unconditionally. This can
lead to no such file exceptions when logging configs are not being
resolved, for example when installing a plugin. This commit moves this
check to only execute when logging configs are being resolved.
Some assertions in MaxMapCountCheckTests assert that certain messages
are logged. These assertions pass everywhere except Windows where the
JVM seems confused. The issue is not the javac compiler as the bytecode
produced on OS X and Windows is identical for the relevant classes so
this leaves a possible JVM bug. It is not worth investigating the
ultimate cause of this bug so instead this commit introduces a
workaround.
Log4j has a bug where it does not handle a security exception that can
be thrown when it is rendering a stack trace. This commit intentionally
introduces jar hell with the ThrowableProxy class to work around this
bug until a fix is a released.
Relates #20306
To ensure we don't add documents more than once even if it's mostly paranoia
except of one case where we relocated a shards away and back to the same node
while an initial request is in flight but has not yet finished AND is retried.
Yet, this is a possible case and for that reason we ensure we pass on the
maxUnsafeAutoIdTimestamp on when we prepare for translog recovery.
Relates to #20211
Currently it does not because our parsers do not support big integers/decimals
(on purpose) but we do not have to ask our parser for the number type, we can
just ask the jackson parser for a number representation of the value with the
right type.
Note that I did not add similar tests for big decimals because Jackson seems to
never return big decimals, even for decimal values that are out of the range of
values that can be represented by doubles.
Closes#11508
This commit configures test logging for Log4j 2. The default logger
configuration uses the console appender but at the error level, so most
tests are missing logging. Instead, this commit provides a configuration
for tests which is picked up from the classpath by Log4j 2 when it
initializes. However, this now means that we can no longer initialize
Log4j with a bare-bones configuration when tests run as doing so will
prevent Log4j 2 from attempting to configure logging via the
classpath. Consequently, we move this needed initialization (as
commented, to avoid a message about a status logger not being configured
when we are preparing to configure Log4j from properties files in the
config directory) to only run when we are explicitly configuring Log4j
from properties files.
Relates #20284
Rather than checking that those values are greater than 0, we can sum up the values gotten from all nodes and check that what is returned is that same value.
The mem section was buggy in cluster stats and removed. It is now added back with the same structure as in node stats, containing total memory, available memory, used memory and percentages. All the values are the sum of all the nodes across the cluster (or at least the ones that we were able to get the values from).
