Hello, We have been using solr 6.6.3 with Sitecore 9, however currently we seem to be observing the below issue while rebuilding the index "Invalid Date in Date Math String" We already applied the patch located at the below location but it did not fix the issue: https://github.com/SitecoreSupport/Sitecore.Support.178247/releases/tag/8.2.2.0
Please let me know if anyone was able to fix this issue with any other method. (Note: I have updated my Sitecore support ticket as well with the same details) 5980 22:10:20 WARN [Index=xxxxxxx _index] Crawler : AddRecursive DoItemAdd failed - {F8057A68-6A5A-43ED-8781-BFA36D4DF3EE} Exception: SolrNet.Exceptions.SolrConnectionException Message: <?xml version="1.0" encoding="UTF-8"?> <response> <lst name="responseHeader"><int name="status">400</int><int name="QTime">325</int></lst><lst name="error"><lst name="metadata"><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.common.SolrException</str><str name="root-error-class">java.time.format.DateTimeParseException</str><str name="error-class">org.apache.solr.update.processor.DistributedUpdateProcessor$DistributedUpdatesAsyncException</str><str name="root-error-class">org.apache.solr.update.processor.DistributedUpdateProcessor$DistributedUpdatesAsyncException</str></lst><str name="msg">7 Async exceptions during distributed update: Error from server at x.x.x.x:8983/solr/xxxxxxxx_index_shard2_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxxx_index_shard2_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%xxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20180730T164926Z' Error from server at x.x.x.x:8983/solr/xxxxxxxxx_index_shard1_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard1_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20170901T183400Z' Error from server at x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20171026T181027Z' Error from server at x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20171028T070000Z' Error from server at x.x.x.x:8983/solr/xxxxxxx_index_shard1_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard1_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20171004T070000Z' Error from server at x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard2_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20170314T000000Z' Error from server at x.x.x.x:8983/solr/xxxxxxx_index_shard1_replica2: Bad Request request: x.x.x.x:8983/solr/xxxxxxx_index_shard1_replica2/update?update.distrib=TOLEADER&distrib.from=https%3A%2F%2F40.113.227.147%3A8983%2Fsolr%2Fxxxxxxx_index_shard1_replica3%2F&wt=javabin&version=2 Remote error message: Invalid Date in Date Math String:'20170626T000000Z'</str><int name="code">400</int></lst> </response> Source: SolrNet at SolrNet.Impl.SolrConnection.PostStream(String relativeUrl, String contentType, Stream content, IEnumerable`1 parameters) at SolrNet.Impl.SolrConnection.Post(String relativeUrl, String s) at SolrNet.Impl.SolrBasicServer`1.SendAndParseHeader(ISolrCommand cmd) at Sitecore.ContentSearch.SolrProvider.SolrBatchUpdateContext.AddRange(IEnumerable`1 group, Int32 groupSize) at Sitecore.ContentSearch.SolrProvider.SolrBatchUpdateContext.AddDocument(Object itemToAdd, IExecutionContext[] executionContexts) at Sitecore.ContentSearch.SolrProvider.SolrIndexOperations.ApplyPermissionsThenIndex(IProviderUpdateContext context, IIndexable version) at Sitecore.ContentSearch.SitecoreItemCrawler.DoAdd(IProviderUpdateContext context, SitecoreIndexableItem indexable) at Sitecore.ContentSearch.HierarchicalDataCrawler`1.CrawlItem(T indexable, IProviderUpdateContext context, CrawlState`1 state) Nested Exception Exception: System.Net.WebException Message: The remote server returned an error: (400) Bad Request. Source: System at System.Net.HttpWebRequest.GetResponse() at HttpWebAdapters.Adapters.HttpWebRequestAdapter.GetResponse() at SolrNet.Impl.SolrConnection.GetResponse(IHttpWebRequest request) at SolrNet.Impl.SolrConnection.PostStream(String relativeUrl, String contentType, Stream content, IEnumerable`1 parameters) Thanks Ritesh