merge current message queue code changes (#6201)

* listing files to convert to parquet

* write parquet files

* save logs into parquet files

* pass by value

* compact logs into parquet format

* can skip existing files

* refactor

* refactor

* fix compilation

* when no partition found

* refactor

* add untested parquet file read

* rename package

* refactor

* rename files

* remove unused

* add merged log read func

* parquet wants to know the file size

* rewind by time

* pass in stop ts

* add stop ts

* adjust log

* minor

* adjust log

* skip .parquet files when reading message logs

* skip non message files

* Update subscriber_record.go

* send messages

* skip message data with only ts

* skip non log files

* update parquet-go package

* ensure a valid record type

* add new field to a record type

* Update read_parquet_to_log.go

* fix parquet file name generation

* separating reading parquet and logs

* add key field

* add skipped logs

* use in memory cache

* refactor

* refactor

* refactor

* refactor, and change compact log

* refactor

* rename

* refactor

* fix format

* prefix v to version directory

1 files changed, 3 insertions, 2 deletions

diff --git a/weed/filer/topics.go b/weed/filer/topics.go
index 3a2fde8c4..707a4f878 100644
--- a/weed/filer/topics.go
+++ b/weed/filer/topics.go
@@ -1,6 +1,7 @@
 package filer
 
 const (
-	TopicsDir    = "/topics"
-	SystemLogDir = TopicsDir + "/.system/log"
+	TopicsDir     = "/topics"
+	SystemLogDir  = TopicsDir + "/.system/log"
+	TopicConfFile = "topic.conf"
 )