The Elasticsearch startup scripts contain checks for the presence of
support for environment variables that were removed in the 5.x
series. These checks warn the user and fail the script if any of the
unsupported environment variables are present. This was provided as
migration step from 2.x to 5.x so that we were not just silently
ignoring environment variables that were previously set. This commit
removes these checks, as upgrades from 2.x to 6.x are not supported.
Relates #20404
Search section supports an ext section that is used to provide additional config needed from plugins. It is now tied to sub fetch phases because it is the only section that may need additional config, but there is no reason for the two to be tightly coupled.
It is now possible to register a searchExtParser independently from a sub fetch phase. All a search ext parser does is parsing some ext section of a search request, whose parsed resulting object is stored in the search context for later retrieval.
The parser is now needed only for sub fetch phases, but doesn't have to be strictly connected to them, it could be used for something else as well potentially
The context was an object where the parsed info are stored. That is more of what we call the builder since after the search refactoring. No need for generics in FetchSubPhaseParser then. Also the previous setHitsExecutionNeeded wasn't useful, it can be removed as well, given that once there is a parsed ext section, it will become a builder that can be retrieved by the sub fetch phase. The sub fetch phase is responsible for doing nothing in case the builder is not set, meaning that the fetch sub phase is plugged in but the request didn't have the corresponding section.
SearchParseElement is renamed to FetchSubPhaseParser and moved to the search.fetch package. Its parse method doesn't get the SearchContext as argument anymore, only the XContentParser, and the return type is what gets parsed (the fetch sub phase context which we may as well rename later).
It is the parser that initializes the FetchSubPhaseContext then. SearchService retrieves the parser by name, calls parse against it and stores the result of parsing by name. No need for FetchSubPhase.ContextFactory anymore, which can be removed.
Given that doc value fields is our own fetch sub phase, it doesn't need to be implemented like if it was plugged in from the outside. It doesn't need its own fetch sub phase context, but it can just be an instance member in SearchContext
Parse elements are always empty for all of our search phases. They can be non empty only for sub fetch phases as they are pluggable and search parse element is left to be used only for plugins that plug in their own sub fetch phase. Only FetchPhase needs now the parseElements method then.
Log4j has a bug where on shutdown it ignores that JMX might be disabled;
since it does not respect this on shutdown, it proceeds to attempt to
access JMX leading to a security exception that should have otherwise
not occurred had it respected that JMX is disabled. This commit
intentionally introduces jar hell with the Server class to work around
this bug until a fix is released.
Relates #20389
Previously we would disable console logging in certain circumstances
(for example, if Elasticsearch is not in the foreground, or if
Elasticsearch is in the foreground but an exception was thrown during
bootstrap). This commit makes this handling work with Log4j 2. This will
prevent users from seeing double bootstrap check failure messages.
Relates #20387
Since the sub query of a function score query is checked on CustomQueryScorer#extractUnknwonQuery we try to extract the terms from the rewritten form of the sub query.
MultiTermQuery rewrites query within a constant score query/weight which returns an empty array when extractTerms is called.
The extraction of the inner terms of a constant score query/weight changed in Lucene somewhere between ES version 2.3 and 2.4 (https://issues.apache.org/jira/browse/LUCENE-6425) which is why this problem occurs on ES > 2.3.
This change moves the extraction of the sub query from CustomQueryScorer#extractUnknownQuery to CustomQueryScorer#extract in order to do the extraction of the terms on the original form of the sub query.
This fixes highlighting of sub queries that extend MultiTermQuery since there is a special path for this kind of query in the QueryScorer (which extract the terms to highlight).
This was an error-prone version type that allowed overriding previous
version semantics. It could cause primaries and replicas to be out of
sync however, so it has been removed.
Resolves#19769
This adds a version field to Templates, which is itself is unused by Elasticsearch, but exists for users to better manage their own templates. Like description, it's optional.
Previous versions of Elasticsearch permitted unquoted JSON field names even though this is against the JSON spec. This leniency was disabled by default in the 5.x series of Elasticsearch but a backwards compatibility layer was added via a system property with the intention of removing this layer in 6.0.0. This commit removes this backwards compatibility layer.
Relates #20388
This commit removes an assertion regarding removing the support for
cluster name being part of the data path in favor of a tracking issue.
Relates #20391
This includes:
- All regular numeric types such as int, long, scaled-float, double, etc
- IP addresses
- Dates
- Geopoints and Geoshapes
Relates to #19784
The 5.x series of Elasticsearch emits a warning if any of the old
logging configuration formats are present. This commit removes that
warning.
Relates #20386
By default, when an exception causes the JVM to terminate, the stack
trace is printed. In the case of failing bootstrap checks, this stack
trace is useless to the user, and might even distract them from seeing
that the bootstrap checks failed for reasons under their control. With
this commit, we cause the stack trace for a failing bootstrap check to
be truncated.
We also modify some methods to not declare that they throw the top level
checked exception type Exception, but instead explicitly declare the
exceptions that they throw. These exceptions are caught and wrapped in a
BootstrapException so that we can percolate only two exception types out
of Bootstrap#init as checked exception, BootstrapException and
NodeValidationException.
Relates #19989
The collect_payloads parameter of the span_near query was previously
deprecated with the intention to be removed. This commit removes this
parameter.
Relates #20385
This commit cleans most of the methods of XContentBuilder so that:
- Jackson's convenience methods are used instead of our custom ones (ie field(String,long) now uses Jackson's writeNumberField(String, long) instead of calling writeField(String) then writeNumber(long))
- null checks are added for all field names and values
- methods are grouped by type in the class source
- methods have the same parameters names
- duplicated methods like field(String, String...) and array(String, String...) are removed
- varargs methods now have the "array" name to reflect that it builds arrays
- unused methods like field(String,BigDecimal) are removed
- all methods now follow the execution path: field(String,?) -> field(String) then value(?), and value(?) -> writeSomething() method. Methods to build arrays also follow the same execution path.
Tal Levy
Luca Cavanna
javanna
Jason Tedor
Nicholas Knize
Tanguy Leroux
Clinton Gormley
Jim Ferenczi
Simon Willnauer
Jun Ohtani
Lee Hinman
Chris Earle