Why is eclipse particularly stuck when Hierarchical in JavaEE view?

Why is eclipse particularly stuck when package presentation is selected as Hierarchical in JavaEE view? Hit a breakpoint and get stuck for two seconds. Printed gc, no fullGC? found. What"s the problem?

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b30e56-2b4ca.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30e56-2b4ca.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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