We use group settings historically instead of using a prefix setting which is more restrictive and type safe. The majority of the usecases needs to access a key, value map based on the _leave node_ of the setting ie. the setting `index.tag.*` might be used to tag an index with `index.tag.test=42` and `index.tag.staging=12` which then would be turned into a `{"test": 42, "staging": 12}` map. The group settings would always use `Settings#getAsMap` which is loosing type information and uses internal representation of the settings. Using prefix settings allows now to access such a method type-safe and natively.
Elasticsearch doesn't allow having an index alias named with the same name as an existing index. We currently have logic that tries to prevents that in the `MetaData.Builder#build()` method. Sadly that logic is flawed. Depending on iteration order, we may allow the above to happen (if we encounter the alias before the index).
This commit fixes the above and improves the error message while at it.
Note that we have a lot of protections in place before we end up relying on the metadata builder (validating this when we process APIs). I takes quite an abuse of the cluster to get that far.
Early termination with index sorting always return the best top N in the response but set the flag `terminated_early`
in the response. This can be confusing because we use the same flag for `terminate_after` which on the contrary returns partial results.
This change removes the flag when results are not partial (early termination due to index sorting) and keeps it only when `terminate_after` is used.
Closes#26408
Numeric fields no longer support the index_options parameter. This changes the parameter
to be rejected in numeric field types after it was deprecated in 6.0.
Closes#21475
The log message here is incorrect, a failure here is occuring on the
post-operation global checkpoint sync, not the background sync. This
commit fixes the log message.
We were accidentally defaulting it to the scroll size.
Untwists some of the tricks that we play with parsing
so that the size is no longer scrambled.
Closes#26761
The routing entry is used by external components to check whether the shard is ready to perform as primary. Most notably, the peer recovery source handler delays recoveries until the shard routing entry says the shard is ready.
When a shard is promoted to primary, we currently update the shard's routing entry before we finish all the work relating to the promotion. This can cause recoveries to fail later on because the `GlobalCheckpointTracker` isn't set (yet) to primary mode.
This commit fixes this issue by updating the routing entry last.
The previous test was too strict and enforced that the target object was a
parent. It has been relaxed so that fields that belong to the same nested
object can copy to each other.
The commit also improves error handling in case of multi-fields. The current
validation works but may throw confusing error messages since it assumes that
only object fields may introduce dots in fields names while multi fields may
too.
Closes#26763
Other tokenizers like the standard tokenizer allow overriding the default
maximum token length of 255 using the `"max_token_length` parameter. This change
enables using this parameter also with the whitespace tokenizer. The range that
is currently allowed is from 0 to StandardTokenizer.MAX_TOKEN_LENGTH_LIMIT,
which is 1024 * 1024 = 1048576 characters.
Closes#26643
This change adds a fromXContent method to Settings that allows to read
the xcontent that is produced by toXContent. It also replaces the entire settings
loader infrastructure and removes the structured map representation. Future PRs will
also tackle the `getAsMap` that exposes the internal represenation of settings for
better encapsulation.
This commit fixes issues with the global checkpoint sync test. The test
was off in initializing the maximum sequence number on the primary
shard, and off setting the local knowledge on the primary of the global
checkpoint on the replica.
Both TopDocsCollector and LeafCollector were being kept around at the aggregator level. In case the nested aggregator would do a post collection then this could cause pushing down docids to top hits child aggregators that already moved the next LeafCollector (causing assertions to trip and incorrect results).
By keeping track of the LeafCollector in a seperate map at the leaf bucket level this problem can simply not happen any more as the place holding LeafCollector is no longer shared.
Also LeafCollector instances for TopDocsCollectors are no longer pre-created as the beginning a new segment is evaluated. There is no guarantee that TopHitsAggregator encounters a document for a particular bucket and there has to be logic to create LeafCollector instances which have not been seen before.
Closes#26738
Adds the wait_for_active_shards parameter to the index open command. Similar to the index creation command, the index open command will now, by default, wait until the primaries have been allocated.
Closes#20937
It is the exciting return of the global checkpoint background
sync. Long, long ago, in snapshot version far, far away we had and only
had a global checkpoint background sync. This sync would fire
periodically and send the global checkpoint from the primary shard to
the replicas so that they could update their local knowledge of the
global checkpoint. Later in time, as we sped ahead towards finalizing
the initial version of sequence IDs, we realized that we need the global
checkpoint updates to be inline. This means that on a replication
operation, the primary shard would piggy back the global checkpoint with
the replication operation to the replicas. The replicas would update
their local knowledge of the global checkpoint and reply with their
local checkpoint. However, this could allow the global checkpoint on the
primary to advance again and the replicas would fall behind in their
local knowledge of the global checkpoint. If another replication
operation never fired, then the replicas would be permanently behind. To
account for this, we added one more sync that would fire when the
primary shard fell idle. However, this has problems:
- the shard idle timer defaults to five minutes, a long time to wait
for the replicas to learn of the new global checkpoint
- if a replica missed the sync, there was no follow-up sync to catch
them up
- there is an inherent race condition where the primary shard could
fall idle mid-operation (after having sent the replication request to
the replicas); in this case, there would never be a background sync
after the operation completes
- tying the global checkpoint sync to the idle timer was never natural
To fix this, we add two additional changes for the global checkpoint to
be synced to the replicas. The first is that we add a post-operation
sync that only fires if there are no operations in flight and there is a
lagging replica. This gives us a chance to sync the global checkpoint to
the replicas immediately after an operation so that they are always kept
up to date. The second is that we add back a global checkpoint
background sync that fires on a timer. This timer fires every thirty
seconds, and is not configurable (for simplicity). This background sync
is smarter than what we had previously in the sense that it only sends a
sync if the global checkpoint on at least one replica is lagging that of
the primary. When the timer fires, we can compare the global checkpoint
on the primary to its knowledge of the global checkpoint on the replicas
and only send a sync if there is a shard behind.
Relates #26591
When using a bulk processor, the thread context was not preserved for the flush runnable which is
executed in another thread in the thread pool. This change wraps the flush runnable in a context
preserving runnable so that the headers and transients from the creation time of the bulk processor
are available during the execution of the flush.
Closes#26596
The `fielddata` field and the use of the `_name` field in the short syntax of the range
query have been deprecated in 5.0 and can be removed.
The same goes for the deprecated `score_mode` field in HasParentQueryBuilder,
the deprecated `like_text`, `ids` and `docs` parameter in the `more_like_this` query,
the deprecated query name in the short version of the `regexp` query, and several
deprecated alternative field names in other query builders.
The `type` field has been deprecated in 5.0 and can be removed. It has been
replaced by using the MatchPhraseQueryBuilder or the
MatchPhrasePrefixQueryBuilder. The `slop` field has also been deprecated and can
be removed, the phrase and phrase prefix query builders still provide this
parameter.
- Removes mutual dependency between GatewayMetaState and TransportNodesListGatewayMetaState
- Deguices MetaDataIndexUpgradeService
- Deguices GatewayMetaState
- Makes Gateway the master-level component that is only responsible for coordinating the state recovery
The nested aggregator now buffers all bucket ords per parent document and
emits all bucket ords for a parent document's nested document once. This way
the nested documents document DocIdSetIterator gets used once per bucket
instead of wrapping the nested aggregator inside a multi bucket aggregator,
which was the current solution upto now. This allows sorting by buckets
under a nested bucket.
Closes#16838
This assertion is wrong because the global checkpoint on a promoted
primary can be lagging the replicas until it catches up after through
resyncs, ongoing indexing operations and removing the old primary from
the in-sync set.
TemplateUpgradeService might get stuck in repeatedly upgrading templates after upgrade to 5.6.0. This is caused by shuffling mappings definition in the template during template serialization. This commit makes the template serialization consistent.
Closes#26673
Restoring a shard from snapshot throws the primary back in time violating assumptions and bringing the validity of global checkpoints in question. To avoid problems, we should make sure that a shard that was restored will never be the source of an ops based recovery to a shard that existed before the restore. To this end we have introduced the notion of `histroy_uuid` in #26577 and required that both source and target will have the same history to allow ops based recoveries. This PR make sure that a shard gets a new uuid after restore.
As suggested by @ywelsch , I derived the creation of a `history_uuid` from the `RecoverySource` of the shard. Store recovery will only generate a uuid if it doesn't already exist (we can make this stricter when we don't need to deal with 5.x indices). Peer recovery follows the same logic (note that this is different than the approach in #26557, I went this way as it means that shards always have a history uuid after being recovered on a 6.x node and will also mean that a rolling restart is enough for old indices to step over to the new seq no model). Local shards and snapshot force the generation of a new translog uuid.
Relates #10708Closes#26544
This commit moves the pre-6.0 node checkpoint constant from
SequenceNumbersService to SequenceNumbers so it can chill with the other
sequence number-related constants.
Relates #26690
Request bodys that only consists of a String value can lead to endless loops in the
parser of several rest requests like e.g. `_count`. Up to 5.2 this seems to have been caught
in the logic guessing the content type of the request, but since then it causes the node to
block. This change introduces checks for receiving a valid xContent object before starting the
parsing in RestActions#parseTopLevelQueryBuilder().
Closes#26083
