'Sort exceeded memory limit' MongoDb 在 Spring 中的问题
Problem with 'Sort exceeded memory limit' MongoDb in Spring
我正在编写一个使用 MongoRepository 实现查询的方法,我在 Java/Spring 项目中使用聚合,但在我测试时它给出了超出的内存限制。
我试过使用
newAggregationOptions().cursorBatchSize(pageable.getPageSize()).allowDiskUse(true).build()
但没用
我的方法:
...
var matchCriteria = match(criteria);
var unwindVariations = unwind("variations", false);
var sort = sort(Sort.Direction.ASC, "variations.plataformStatus.status");
var countResult = count().as("totalElements");
var aggregationOptions = Aggregation.newAggregationOptions().cursorBatchSize(pageable.getPageSize()).allowDiskUse(true).build();
var countAggregation = newAggregation(
matchCriteria,
unwindVariations,
sort,
countResult)
.withOptions(aggregationOptions);
var totalElements = mongoTemplate.aggregate(countAggregation, "PRODUCT", Map.class).getMappedResults();
错误信息:
com.mongodb.MongoCommandException: Command failed with error 16819 (Location16819): 'Sort exceeded memory limit of 104857600 bytes, but did not opt in to external sorting. Aborting operation. Pass allowDiskUse:true to opt in.' on server cluster0-shard-00-01-du380.mongodb.net:27017.
您应该启用 allowDiskUse 选项。
默认情况下,排序操作有 100MB 的限制(在内存中),在您的操作中启用该选项将允许使用更大的大小。
来自MongoDB's sort documentation:
The $sort stage has a limit of 100 megabytes of RAM. By default, if the stage exceeds this limit, $sort will produce an error. To allow for the handling of large datasets, set the allowDiskUse option to true to enable $sort operations to write to temporary files.
我正在编写一个使用 MongoRepository 实现查询的方法,我在 Java/Spring 项目中使用聚合,但在我测试时它给出了超出的内存限制。
我试过使用
newAggregationOptions().cursorBatchSize(pageable.getPageSize()).allowDiskUse(true).build()
但没用
我的方法:
...
var matchCriteria = match(criteria);
var unwindVariations = unwind("variations", false);
var sort = sort(Sort.Direction.ASC, "variations.plataformStatus.status");
var countResult = count().as("totalElements");
var aggregationOptions = Aggregation.newAggregationOptions().cursorBatchSize(pageable.getPageSize()).allowDiskUse(true).build();
var countAggregation = newAggregation(
matchCriteria,
unwindVariations,
sort,
countResult)
.withOptions(aggregationOptions);
var totalElements = mongoTemplate.aggregate(countAggregation, "PRODUCT", Map.class).getMappedResults();
错误信息:
com.mongodb.MongoCommandException: Command failed with error 16819 (Location16819): 'Sort exceeded memory limit of 104857600 bytes, but did not opt in to external sorting. Aborting operation. Pass allowDiskUse:true to opt in.' on server cluster0-shard-00-01-du380.mongodb.net:27017.
您应该启用 allowDiskUse 选项。
默认情况下,排序操作有 100MB 的限制(在内存中),在您的操作中启用该选项将允许使用更大的大小。
来自MongoDB's sort documentation:
The $sort stage has a limit of 100 megabytes of RAM. By default, if the stage exceeds this limit, $sort will produce an error. To allow for the handling of large datasets, set the allowDiskUse option to true to enable $sort operations to write to temporary files.