Currently a network disruption will fail a peer recovery. This commit
adds network errors as retryable actions for the source node.
Additionally, it adds sequence numbers to the recovery request to
ensure that the requests are idempotent.
Additionally it adds a reestablish recovery action. The target node
will attempt to reestablish an existing recovery after a network
failure. This is necessary to ensure that the retries occurring on the
source node provide value in bidirectional failures.
We should never write a circular reference exception as we will fail a
node with StackOverflowError. However, we have one in #53589.
I tried but failed to find its location. With this commit, we will avoid
StackOverflowError in production and detect circular exceptions in
tests.
Closes#53589
This is a simple naming change PR, to fix the fact that "metadata" is a
single English word, and for too long we have not followed general
naming conventions for it. We are also not consistent about it, for
example, METADATA instead of META_DATA if we were trying to be
consistent with MetaData (although METADATA is correct when considered
in the context of "metadata"). This was a simple find and replace across
the code base, only taking a few minutes to fix this naming issue
forever.
ElasticsearchException.guessRootCauses would return wrapper exception if
inner exception was not an ElasticsearchException. Fixed to never return
wrapper exceptions.
At least following APIs change root_cause.0.type as a result:
_update with bad script
_index with bad pipeline
Relates #50417
Today we wrap exceptions that occur while executing an ingest processor
in an ElasticsearchException. Today, in ExceptionsHelper#unwrapCause we
only unwrap causes for exceptions that implement
ElasticsearchWrapperException, which the top-level
ElasticsearchException does not. Ultimately, this means that any
exception that occurs during processor execution does not have its cause
unwrapped, and so its status is blanket treated as a 500. This means
that while executing a bulk request with an ingest pipeline,
document-level failures that occur during a processor will cause the
status for that document to be treated as 500. Since that does not give
the client any indication that they made a mistake, it means some
clients will enter infinite retries, thinking that there is some
server-side problem that merely needs to clear. This commit addresses
this by introducing a dedicated ingest processor exception, so that its
causes can be unwrapped. While we could consider a broader change to
unwrap causes for more than just ElasticsearchWrapperExceptions, that is
a broad change with unclear implications. Since the problem of reporting
500s on client errors is a user-facing bug, we take the conservative
approach for now, and we can revisit the unwrapping in a future change.
We renew the CCR retention lease at a fixed interval, therefore it's
possible to have more than one in-flight renewal requests at the same
time. If requests arrive out of order, then the assertion is violated.
Closes#46416Closes#46013
If a node is misconfigured to talk to remote node HTTP port (instead of
transport port) eventually it will receive an HTTP response from the
remote node on transport port (this happens when a node sends
accidentally line terminating byte in a transport request).
If this happens today it results in a non-friendly log message and a
long stack trace.
This commit adds a check if a malformed response is HTTP response. In
this case, a concise log message would appear.
(cherry picked from commit 911d02b7a9c3ce7fe316360c127a935ca4b11f37)
Today when executing an action on a primary shard under permit, we do
not enforce that the shard is in primary mode before executing the
action. This commit addresses this by wrapping actions to be executed
under permit in a check that the shard is in primary mode before
executing the action.
When a retention lease already exists on an add retention lease
invocation, or a retention lease is not found on a renew retention lease
invocation today we throw an illegal argument exception. This puts a
burden on the caller to catch that specific exception and parse the
message. This commit relieves the burden from the caller by adding
dedicated exception types for these situations.
Today when bootstrapping a Zen2 cluster we wait for every node in the
`initial_master_nodes` setting to be discovered, so that we can map the
node names or addresses in the `initial_master_nodes` list to their IDs for
inclusion in the initial voting configuration. This means that if any of
the expected master-eligible nodes fails to start then bootstrapping will
not occur and the cluster will not form. This is not ideal, and we would
prefer the cluster to bootstrap even if some of the master-eligible nodes
do not start.
Safe bootstrapping requires that all pairs of quorums of all initial
configurations overlap, and this is particularly troublesome to ensure
given that nodes may be concurrently and independently attempting to
bootstrap the cluster. The solution is to bootstrap using an initial
configuration whose size matches the size of the expected set of
master-eligible nodes, but with the unknown IDs replaced by "placeholder"
IDs that can never belong to any node. Any quorum of received votes in any
of these placeholder-laden initial configurations is also a quorum of the
"true" initial set of master-eligible nodes, giving the guarantee that it
intersects all other quorums as required.
Note that this change means that the initial configuration is not
necessarily robust to any node failures. Normally the cluster will form and
then auto-reconfigure to a more robust configuration in which the
placeholder IDs are replaced by the IDs of genuine nodes as they join the
cluster; however if a node fails between bootstrapping and this
auto-reconfiguration then the cluster may become unavailable. This we feel
to be less likely than a node failing to start at all.
This commit also enormously simplifies the cluster bootstrapping process.
Today, the cluster bootstrapping process involves two (local) transport actions
in order to support a flexible bootstrapping API and to make it easily
accessible to plugins. However this flexibility is not required for the current
design so it is adding a good deal of unnecessary complexity. Here we remove
this complexity in favour of a much simpler ClusterBootstrapService
implementation that does all the work itself.
delete and close index actions threw IllegalArgumentExceptions
when attempting to run against an index that has a snapshot
in progress.
This change introduces a dedicated SnapshotInProgressException
for these scenarios. This is done to explicitly signal to clients that
this is the reason the action failed, and it is a retryable error.
relates to #37541.
Today the `GetDiscoveredNodesAction` waits, possibly indefinitely, to discover
enough nodes to bootstrap the cluster. However it is possible that the cluster
forms before a node has discovered the expected collection of nodes, in which
case the action will wait indefinitely despite the fact that it is no longer
required.
This commit changes the behaviour so that the action fails once a node receives
a cluster state with a nonempty configuration, indicating that the cluster has
been successfully bootstrapped and therefore the `GetDiscoveredNodesAction`
need wait no longer.
Relates #36380 and #36381; reverts 558f4ec27820e1a50660dc1f3437422150339af0.
With this change, `Version` no longer carries information about the qualifier,
we still need a way to show the "display version" that does have both
qualifier and snapshot. This is now stored by the build and red from `META-INF`.
Increases testability of MasterService and the discovery layer. Changes:
- Async publish method
- Moved a few interfaces/classes top-level to simplify imports
- Deterministic MasterService implementation for tests
Given the weirdness of the response returned by the get alias API, we went for a client specific response, which allows us to hold the error message, exception and status returned as part of the response together with aliases. See #30536 .
Relates to #27205
This commit reworks testing for `ListTasksResponse` so that random
fields insertion can be tested and xcontent equivalence can be checked
too. Proper exclusions need to be configured, and failures need to be
tested separately. This helped finding a little problem, whenever there
is a node failure returned, the nodeId was lost as it was never printed
out as part of the exception toXContent.
Just like `ElasticsearchException`, the inner most
`XContentParseException` tends to contain the root cause of the
exception and show be show to the user in the `root_cause` field.
The effectively undoes most of the changes that #29373 made to the
`root_cause` for parsing exceptions. The `type` field still changes from
`parse_exception` to `x_content_parse_exception`, but this seems like a
fairly safe change.
`ElasticsearchWrapperException` *looks* tempting to implement this but
the behavior isn't quite right. `ElasticsearchWrapperExceptions` are
entirely unwrapped until the cause no longer
`implements ElasticsearchWrapperException` but `XContentParseException`
should be unwrapped until its cause is no longer an
`XContentParseException` but no further. In other words,
`ElasticsearchWrapperException` are unwrapped one step too far.
Closes#30261
This modifies xcontent serialization of Exceptions to contain suppressed
exceptions. If there are any suppressed exceptions they are included in
the exception response by default. The reasoning here is that they are
fairly rare but when they exist they almost always add extra useful
information. Take, for example, the response when you specify two broken
ingest pipelines:
```
{
"error" : {
"root_cause" : ...snip...
"type" : "parse_exception",
"reason" : "[field] required property is missing",
"header" : {
"processor_type" : "set",
"property_name" : "field"
},
"suppressed" : [
{
"type" : "parse_exception",
"reason" : "[field] required property is missing",
"header" : {
"processor_type" : "convert",
"property_name" : "field"
}
}
]
},
"status" : 400
}
```
Moreover, when suppressed exceptions come from 500 level errors should
give us more useful debugging information.
Closes#23392
The rejected execution handler API says that rejectedExecution(Runnable,
ThreadPoolExecutor) throws a RejectedExecutionException if the task must
be rejected due to capacity on the executor. We do throw something that
smells like a RejectedExecutionException (it is named
EsRejectedExecutionException) yet we violate the API because
EsRejectedExecutionException is not a RejectedExecutionException. This
has caused problems before where we try to catch RejectedExecution when
invoking rejectedExecution but this causes EsRejectedExecutionException
to go uncaught. This commit addresses this by modifying
EsRejectedExecutionException to extend
RejectedExecutionException.
* Factor UnknownNamedObjectException into its own class
This moves the inner class `UnknownNamedObjectException` from
`NamedXContentRegistry` into a top-level class. This is so that
`NamedXContentRegistry` doesn't have to depend on StreamInput and StreamOutput.
Relates to #28504
