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Published Jun. 30, 2025

SearchException entity content is too long for the configured buffer limit Error for a custom entity even when Indexing Batch Sizes configuration is small

Written By

Ricardo Couso

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Issue

  • Trying to reindex a custom entity produces SearchExceptions in the logs due to a buffer limit:
    com.liferay.portal.kernel.search.SearchException: java.lang.RuntimeException:
    java.io.IOException: entity content is too long [134770594] for the configured buffer limit [104857600] at
    com.liferay.portal.kernel.search.BaseIndexer.reindex(BaseIndexer.java:471) at
    com.liferay.portal.search.internal.background.task.ReindexSingleIndexerBackgroundTaskExecutor.reindex(ReindexSingleIndexerBackgroundTaskExecutor.java:134) at
    com.liferay.portal.search.internal.background.task.BaseReindexBackgroundTaskExecutor.execute(BaseReindexBackgroundTaskExecutor.java:54) at
    [...]
    java.base/java.lang.Thread.run(Thread.java:829) 
    Caused by: java.lang.RuntimeException: java.io.IOException: entity content is too long [134770594] for the configured buffer limit [104857600] at
    com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.document.BulkDocumentRequestExecutorImpl._getBulkResponse(BulkDocumentRequestExecutorImpl.java:198) at
    com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.document.BulkDocumentRequestExecutorImpl.execute(BulkDocumentRequestExecutorImpl.java:68) at
    com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.document.ElasticsearchDocumentRequestExecutor.executeBulkDocumentRequest(ElasticsearchDocumentRequestExecutor.java:50) at
    com.liferay.portal.search.engine.adapter.document.BulkDocumentRequest.accept(BulkDocumentRequest.java:33) at
    com.liferay.portal.search.engine.adapter.document.BulkDocumentRequest.accept(BulkDocumentRequest.java:25) at
    com.liferay.portal.search.elasticsearch7.internal.search.engine.adapter.ElasticsearchSearchEngineAdapterImpl.execute(ElasticsearchSearchEngineAdapterImpl.java:81) at
    com.liferay.portal.search.elasticsearch7.internal.ElasticsearchIndexWriter.updateDocuments(ElasticsearchIndexWriter.java:393) at
    com.liferay.portal.search.internal.IndexWriterHelperImpl.updateDocuments(IndexWriterHelperImpl.java:545) at
    my.own.entity.MyOwnEntityIndexer.reindexEntries(MyOwnEntityIndexer.java:151) at
    my.own.entity.MyOwnEntityIndexer.doReindex(MyOwnEntityIndexer.java:120) at
    com.liferay.portal.kernel.search.BaseIndexer.reindex(BaseIndexer.java:465)
    ... 13 more 
    Caused by: java.io.IOException: entity content is too long [134770594] for the configured buffer limit [104857600] at
    org.elasticsearch.client.RestClient.extractAndWrapCause(RestClient.java:901) at
    [...]
  • The same error persists even after configuring System Settings > Search > Reindex > Indexing Batch Sizes, setting a value smaller than the default 10000:
    my.own.entity.MyOwnEntityIndexer=5000

Environment

  • Liferay DXP 7.4

Resolution

  • There are two ways to provide indexing capabilities to a custom entity:
    • com.liferay.portal.kernel.search.BaseIndexer (older)
    • com.liferay.portal.search.internal.indexer.DefaultIndexer (newer)
  • The example above is using the older.
  • The System Setting Indexing Batch Sizes is only automatically taken into account when using the newer one.
  • To make sure that the configuration is taken into account with the older approach, review the reindex methods in the custom code to make sure that the indexableActionableDynamicQuery used to perform the reindex has an interval set.
    • For example, starting with the example of WikiNodeIndexer, the method _reindexEntries(long companyId) should include 
      indexableActionableDynamicQuery.setInterval(
          _batchIndexingHelper.getBulkSize(getClassName()));
      together with a reference to _batchIndexingHelper 
      @Reference
      private BatchIndexingHelper _batchIndexingHelper;

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