refactor: enhance semantic_text inference error msg (elastic#131519)

Author: mromaios

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/action/filter/ShardBulkInferenceActionFilter.java

@@ -637,7 +637,9 @@ private boolean incrementIndexingPressure(IndexRequestWithIndexingPressure index
                     addInferenceResponseFailure(
                         itemIndex,
                         new InferenceException(
-                            "Insufficient memory available to update source on document [" + indexRequest.getIndexRequest().id() + "]",
+                            "Unable to insert inference results into document ["
+                                + indexRequest.getIndexRequest().id()
+                                + "] due to memory pressure. Please retry the bulk request with fewer documents or smaller document sizes.",
                             e
                         )
                     );
@@ -749,7 +751,9 @@ private void applyInferenceResponses(BulkItemRequest item, FieldInferenceRespons
                 item.abort(
                     item.index(),
                     new InferenceException(
-                        "Insufficient memory available to insert inference results into document [" + indexRequest.id() + "]",
+                        "Unable to insert inference results into document ["
+                            + indexRequest.id()
+                            + "] due to memory pressure. Please retry the bulk request with fewer documents or smaller document sizes.",
                         e
                     )
                 );

x-pack/plugin/inference/src/test/java/org/elasticsearch/xpack/inference/action/filter/ShardBulkInferenceActionFilterTests.java

@@ -709,7 +709,10 @@ public void testIndexingPressureTripsOnInferenceRequestGeneration() throws Excep
                 BulkItemResponse.Failure doc1Failure = doc1Response.getFailure();
                 assertThat(
                     doc1Failure.getCause().getMessage(),
-                    containsString("Insufficient memory available to update source on document [doc_1]")
+                    containsString(
+                        "Unable to insert inference results into document [doc_1]"
+                            + " due to memory pressure. Please retry the bulk request with fewer documents or smaller document sizes."
+                    )
                 );
                 assertThat(doc1Failure.getCause().getCause(), instanceOf(EsRejectedExecutionException.class));
                 assertThat(doc1Failure.getStatus(), is(RestStatus.TOO_MANY_REQUESTS));
@@ -791,7 +794,10 @@ public void testIndexingPressureTripsOnInferenceResponseHandling() throws Except
                 BulkItemResponse.Failure doc1Failure = doc1Response.getFailure();
                 assertThat(
                     doc1Failure.getCause().getMessage(),
-                    containsString("Insufficient memory available to insert inference results into document [doc_1]")
+                    containsString(
+                        "Unable to insert inference results into document [doc_1]"
+                            + " due to memory pressure. Please retry the bulk request with fewer documents or smaller document sizes."
+                    )
                 );
                 assertThat(doc1Failure.getCause().getCause(), instanceOf(EsRejectedExecutionException.class));
                 assertThat(doc1Failure.getStatus(), is(RestStatus.TOO_MANY_REQUESTS));
@@ -902,7 +908,10 @@ public void testIndexingPressurePartialFailure() throws Exception {
                 BulkItemResponse.Failure doc2Failure = doc2Response.getFailure();
                 assertThat(
                     doc2Failure.getCause().getMessage(),
-                    containsString("Insufficient memory available to insert inference results into document [doc_2]")
+                    containsString(
+                        "Unable to insert inference results into document [doc_2]"
+                            + " due to memory pressure. Please retry the bulk request with fewer documents or smaller document sizes."
+                    )
                 );
                 assertThat(doc2Failure.getCause().getCause(), instanceOf(EsRejectedExecutionException.class));
                 assertThat(doc2Failure.getStatus(), is(RestStatus.TOO_MANY_REQUESTS));