为提高效率，提问时请提供以下信息，问题描述清晰可优先响应。
- 【TiDB 版本】：v4.0.6
- 【问题描述】：查看tidb某个节点的tidb log内容，发现许多的如下报错：
[2021/01/11 14:37:16.548 +08:00] [ERROR] [statement_summary.go:765] [“decode plan in statement summary failed”] [plan=“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”] [error=“decode plan: \tProjection_4 \troot \t10 \tmysql.stats_histograms.table_id, mysql.stats_histograms.is_index, mysql.stats_histograms.hist_id, mysql.stats_histograms.distinct_count, mysql.stats_histograms.version, mysql.stats_histograms.null_count, mysql.stats_histograms.tot_col_size, mysql.stats_histograms.stats_ver, mysql.stats_histograms.flag, mysql.stats_histograms.correlation, mysql.stats_histograms.last_analyze_pos\t36 \ttime:9.006038873s, loops:2, Concurrency:OFF \t6.8125 KB\tN/A, depth: , error: strconv.Atoi: parsing “”: invalid syntax”]
这个是什么问题？看sql好像是数据库内部的SQL。
若提问为性能优化、故障排查类问题，请下载脚本运行。终端输出的打印结果，请务必全选并复制粘贴上传。