[Pick 2.0](inverted index) fix compound directory flush buffer error (#28191)

[airborne12]

Proposed changes

Issue Number: close #xxx

Further comments

If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

[airborne12]

run buildall

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[doris-robot]

TeamCity be ut coverage result:
Function Coverage: 37.78% (7989/21144)
Line Coverage: 29.49% (64898/220103)
Region Coverage: 28.96% (33392/115310)
Branch Coverage: 24.83% (17131/68996)
Coverage Report: http://coverage.selectdb-in.cc/coverage/0449ac5bd07fb47b085f7331f705bf8d195f81f9_0449ac5bd07fb47b085f7331f705bf8d195f81f9/report/index.html

[doris-robot]

(From new machine)TeamCity pipeline, clickbench performance test result:
the sum of best hot time: 48.44 seconds
stream load tsv: 567 seconds loaded 74807831229 Bytes, about 125 MB/s
stream load json: 20 seconds loaded 2358488459 Bytes, about 112 MB/s
stream load orc: 65 seconds loaded 1101869774 Bytes, about 16 MB/s
stream load parquet: 31 seconds loaded 861443392 Bytes, about 26 MB/s
insert into select: 29.5 seconds inserted 10000000 Rows, about 338K ops/s
storage size: 17163129501 Bytes

[xiaokang]

#28191