druid/codestyle/spotbugs-exclude.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!--
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~ to you under the Apache License, Version 2.0 (the
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~ software distributed under the License is distributed on an
~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
~ KIND, either express or implied. See the License for the
~ specific language governing permissions and limitations
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-->
<!--
To enforce Spotbugs into the codebase, first, all the errors are
ignored, so we can add them one by one.
Some of the bugs will only occur once or twice on the codebase,
while others will occur potentially a lot.
Reference: https://github.com/apache/druid/pull/7894/files
-->
<FindBugsFilter>
<Match>
<Or>
<Class name="org.apache.druid.sql.calcite.parser.SimpleCharStream"/>
<Class name="org.apache.druid.sql.calcite.parser.TokenMgrError"/>
<Class name="org.apache.druid.sql.calcite.parser.Token"/>
<Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImplTokenManager"/>
<Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImplConstants"/>
<Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImpl"/>
<Class name="org.apache.druid.sql.calcite.parser.DruidSqlParserImpl$JJCalls"/>
</Or>
</Match>
<!-- Ignore "equals" bugs for JsonInclude filter classes. They rely on strange-looking "equals" methods. -->
<Match>
<And>
<Bug pattern="EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS"/>
<Or>
Always return sketches from DS_HLL, DS_THETA, DS_QUANTILES_SKETCH. (#13247) * Always return sketches from DS_HLL, DS_THETA, DS_QUANTILES_SKETCH. These aggregation functions are documented as creating sketches. However, they are planned into native aggregators that include finalization logic to convert the sketch to a number of some sort. This creates an inconsistency: the functions sometimes return sketches, and sometimes return numbers, depending on where they lie in the native query plan. This patch changes these SQL aggregators to _never_ finalize, by using the "shouldFinalize" feature of the native aggregators. It already existed for theta sketches. This patch adds the feature for hll and quantiles sketches. As to impact, Druid finalizes aggregators in two cases: - When they appear in the outer level of a query (not a subquery). - When they are used as input to an expression or finalizing-field-access post-aggregator (not any other kind of post-aggregator). With this patch, the functions will no longer be finalized in these cases. The second item is not likely to matter much. The SQL functions all declare return type OTHER, which would be usable as an input to any other function that makes sense and that would be planned into an expression. So, the main effect of this patch is the first item. To provide backwards compatibility with anyone that was depending on the old behavior, the patch adds a "sqlFinalizeOuterSketches" query context parameter that restores the old behavior. Other changes: 1) Move various argument-checking logic from runtime to planning time in DoublesSketchListArgBaseOperatorConversion, by adding an OperandTypeChecker. 2) Add various JsonIgnores to the sketches to simplify their JSON representations. 3) Allow chaining of ExpressionPostAggregators and other PostAggregators in the SQL layer. 4) Avoid unnecessary FieldAccessPostAggregator wrapping in the SQL layer, now that expressions can operate on complex inputs. 5) Adjust return type to thetaSketch (instead of OTHER) in ThetaSketchSetBaseOperatorConversion. * Fix benchmark class. * Fix compilation error. * Fix ThetaSketchSqlAggregatorTest. * Hopefully fix ITAutoCompactionTest. * Adjustment to ITAutoCompactionTest.
2022-11-03 12:43:00 -04:00
<Class name="org.apache.druid.jackson.DefaultTrueJsonIncludeFilter"/>
<Class name="org.apache.druid.query.scan.ScanQuery$ScanRowsLimitJsonIncludeFilter"/>
<Class name="org.apache.druid.query.scan.ScanQuery$ScanTimeOrderJsonIncludeFilter"/>
<Class name="org.apache.druid.query.scan.ScanQuery$BatchSizeJsonIncludeFilter"/>
<Class name="org.apache.druid.query.groupby.orderby.DefaultLimitSpec$LimitJsonIncludeFilter"/>
<Class name="org.apache.druid.segment.VirtualColumns$JsonIncludeFilter"/>
</Or>
</And>
</Match>
<Match>
<And>
<Bug pattern="SE_BAD_FIELD_STORE" />
<Class name="org.apache.druid.server.AsyncQueryForwardingServlet" />
</And>
</Match>
<Match>
<And>
<Bug pattern="URF_UNREAD_PUBLIC_OR_PROTECTED_FIELD" />
<Class name="org.apache.druid.sql.calcite.planner.CapturedState" />
</And>
</Match>
Frame processing and channels. (#12848) * Frame processing and channels. Follow-up to #12745. This patch adds three new concepts: 1) Frame channels are interfaces for doing nonblocking reads and writes of frames. 2) Frame processors are interfaces for doing nonblocking processing of frames received from input channels and sent to output channels. 3) Cluster-by keys, which can be used for sorting or partitioning. The patch also adds SuperSorter, a user of these concepts, both to illustrate how they are used, and also because it is going to be useful in future work. Central classes: - ReadableFrameChannel. Implementations include BlockingQueueFrameChannel (in-memory channel that implements both interfaces), ReadableFileFrameChannel (file-based channel), ReadableByteChunksFrameChannel (byte-stream-based channel), and others. - WritableFrameChannel. Implementations include BlockingQueueFrameChannel and WritableStreamFrameChannel (byte-stream-based channel). - ClusterBy, a sorting or partitioning key. - FrameProcessor, nonblocking processor of frames. Implementations include FrameChannelBatcher, FrameChannelMerger, and FrameChannelMuxer. - FrameProcessorExecutor, an executor service that runs FrameProcessors. - SuperSorter, a class that uses frame channels and processors to do parallel external merge sort of any amount of data (as long as there is enough disk space). * Additional tests, fixes. * Changes from review. * Better implementation for ReadableInputStreamFrameChannel. * Rename getFrameFileReference -> newFrameFileReference. * Add InterruptedException to runIncrementally; add more tests. * Cancellation adjustments. * Review adjustments. * Refactor BlockingQueueFrameChannel, rename doneReading and doneWriting to close. * Additional changes from review. * Additional changes. * Fix test. * Adjustments. * Adjustments.
2022-08-05 00:29:04 -04:00
<Match>
<!-- Spotbugs doesn't like the MAGIC array -->
<And>
<Bug pattern="MS_MUTABLE_ARRAY" />
<Class name="org.apache.druid.frame.file.FrameFileWriter" />
</And>
</Match>
<Match>
<!-- Spotbugs doesn't like awaiting a latch without checking return value -->
<And>
<Bug pattern="RV_RETURN_VALUE_IGNORED" />
<Class name="org.apache.druid.msq.indexing.MSQWorkerTaskLauncher" />
</And>
</Match>
<Bug pattern="AT_OPERATION_SEQUENCE_ON_CONCURRENT_ABSTRACTION"/>
<Bug pattern="BC_UNCONFIRMED_CAST"/>
<Bug pattern="BIT_SIGNED_CHECK_HIGH_BIT"/>
<Bug pattern="BX_UNBOXING_IMMEDIATELY_REBOXED"/>
<Bug pattern="CN_IDIOM_NO_SUPER_CALL"/>
<Bug pattern="CN_IMPLEMENTS_CLONE_BUT_NOT_CLONEABLE"/>
<Bug pattern="DC_DOUBLECHECK"/>
<Bug pattern="DM_BOXED_PRIMITIVE_FOR_PARSING"/>
<Bug pattern="DM_EXIT"/>
<Bug pattern="DP_CREATE_CLASSLOADER_INSIDE_DO_PRIVILEGED"/>
<Bug pattern="EI_EXPOSE_REP"/>
<Bug pattern="EI_EXPOSE_REP2"/>
<Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS"/>
<Bug pattern="EQ_DOESNT_OVERRIDE_EQUALS"/>
<Bug pattern="EQ_UNUSUAL"/>
<Bug pattern="ES_COMPARING_PARAMETER_STRING_WITH_EQ"/>
<Bug pattern="FE_FLOATING_POINT_EQUALITY"/>
<Bug pattern="HE_EQUALS_USE_HASHCODE"/>
<Bug pattern="IA_AMBIGUOUS_INVOCATION_OF_INHERITED_OR_OUTER_METHOD"/>
<Bug pattern="ICAST_IDIV_CAST_TO_DOUBLE"/>
<Bug pattern="ICAST_INT_CAST_TO_DOUBLE_PASSED_TO_CEIL"/>
<Bug pattern="ICAST_QUESTIONABLE_UNSIGNED_RIGHT_SHIFT"/>
<Bug pattern="IS2_INCONSISTENT_SYNC"/>
<Bug pattern="JLM_JSR166_UTILCONCURRENT_MONITORENTER"/>
<Bug pattern="JLM_JSR166_UTILCONCURRENT_MONITORENTER"/>
<Bug pattern="MS_FINAL_PKGPROTECT"/>
<Bug pattern="MS_PKGPROTECT"/>
<Bug pattern="NP_EQUALS_SHOULD_HANDLE_NULL_ARGUMENT"/>
<Bug pattern="NP_GUARANTEED_DEREF"/>
<Bug pattern="NP_LOAD_OF_KNOWN_NULL_VALUE"/>
<Bug pattern="NP_METHOD_PARAMETER_TIGHTENS_ANNOTATION"/>
<Bug pattern="NP_NONNULL_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR"/>
<Bug pattern="NP_NULL_ON_SOME_PATH"/>
<Bug pattern="NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE"/>
<Bug pattern="NP_NULL_ON_SOME_PATH_MIGHT_BE_INFEASIBLE"/>
<Bug pattern="NP_NULL_PARAM_DEREF"/>
<Bug pattern="NP_NULL_PARAM_DEREF_NONVIRTUAL"/>
<Bug pattern="NP_PARAMETER_MUST_BE_NONNULL_BUT_MARKED_AS_NULLABLE"/>
<Bug pattern="NS_DANGEROUS_NON_SHORT_CIRCUIT"/>
<Bug pattern="OBL_UNSATISFIED_OBLIGATION"/>
<Bug pattern="OS_OPEN_STREAM"/>
<Bug pattern="RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE"/>
<Bug pattern="RCN_REDUNDANT_NULLCHECK_WOULD_HAVE_BEEN_A_NPE"/>
<Bug pattern="REC_CATCH_EXCEPTION"/>
<Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE"/>
<Bug pattern="RV_RETURN_VALUE_IGNORED_NO_SIDE_EFFECT"/>
<Bug pattern="SBSC_USE_STRINGBUFFER_CONCATENATION"/>
<Bug pattern="SE_BAD_FIELD"/>
<Bug pattern="SE_COMPARATOR_SHOULD_BE_SERIALIZABLE"/>
<Bug pattern="SF_SWITCH_FALLTHROUGH"/>
<Bug pattern="SF_SWITCH_NO_DEFAULT"/>
<Bug pattern="SR_NOT_CHECKED"/>
<Bug pattern="SWL_SLEEP_WITH_LOCK_HELD"/>
<Bug pattern="UL_UNRELEASED_LOCK_EXCEPTION_PATH"/>
<Bug pattern="URF_UNREAD_FIELD"/>
</FindBugsFilter>