在 N1QL 查询中间歇性地面对 "Index Not Found"

Question

用例：搜索 "MAYUR" 结果出现在搜索中，但如果我搜索 "MAY" 或 "MA" 没有结果。我已经实现了一个在 startsWith("MAY%") 上搜索的搜索。我正在使用 couchbase 版本 4.6.3-4136-E。

报错信息如下：

org.springframework.data.couchbase.core.CouchbaseQueryExecutionException:
Unable to execute query due to the following n1ql errors:
{"msg":"Index Not Found - cause: queryport.indexNotFound","code":12016}
{"msg":"Index Not Found - cause: queryport.indexNotFound","code":12016}
{"msg":"Index Not Found - cause: queryport.indexNotFound","code":12016}
{"msg":"Index Not Found - cause: queryport.indexNotFound","code":12016}

Java SDK 版本：2.5.5

我时不时遇到这个问题。

代码运行查询

public <T> PageImpl<T> runQuery(final Statement statement, final Expression expression, final String alias,
        final Pageable pageable, final Class<T> tClazz) {
    PageImpl<T> tPage = null;
    try {
        CompletableFuture<List<T>> entityFuture = CompletableFuture
                .supplyAsync(() -> findByN1QLProjection(statement, tClazz)).exceptionally(th -> {
                    logger.write(new Exception(th.getMessage(), th));
                    return Collections.emptyList();
                });
        CompletableFuture<Long> countFuture = CompletableFuture.supplyAsync(() -> doCount(expression, alias))
                .exceptionally(th -> {
                    logger.write(new Exception(th.getMessage(), th));
                    return 0L;
                });
        CompletableFuture.allOf(entityFuture, countFuture).get();
        tPage = new PageImpl<>(entityFuture.get(), pageable, countFuture.get());
    } catch (final InterruptedException | ExecutionException ex) {
        logger.write(ex);
        tPage = new PageImpl<>(Collections.emptyList(), pageable, 0);
    }
    return tPage;
}

Answer 1

根本原因： 错误的执行计划被查询服务缓存并随后被使用，并且由于 index-id 不可用（因为索引被重新创建），查询不断抛出错误：'Index not found'。

解析： 清理存储的准备计划后，查询开始工作。

在 N1QL 查询中间歇性地面对 "Index Not Found"

Facing "Index Not Found" intermittently in N1QL query

java

sdk

couchbase

n1ql