Assertion: compaction | /r/HasProperty | needed
Facets:
value: to remove entrapped air
type: PURPOSE
Source sentences:
text: There are several reasons why compaction of concrete is needed, some of the main points are given below.
text: Hence, compaction is necessary to remove entrapped air and eliminate all types of voids that may cause reduction in strength as well as durability
text: However, checking if compaction is needed requires several calls to the NameNode for each table or partition that has had a transaction done on it since the last major compaction.
text: No compaction would be necessary.