Configurable read buffer size limit KIKIMR-14803

ref:62542e5801ef59acfd22e20d653c555265c24133

3 files changed, 3 insertions, 2 deletions

diff --git a/ydb/core/protos/config.proto b/ydb/core/protos/config.proto
index c2d14559ff..8041d4f4c8 100644
--- a/ydb/core/protos/config.proto
+++ b/ydb/core/protos/config.proto
@@ -1413,6 +1413,7 @@ message TDataShardConfig {
     optional uint64 TtlReadAheadLo = 13 [default = 524288];
     optional uint64 TtlReadAheadHi = 14 [default = 1048576];
     optional uint64 IdleMemCompactionIntervalSeconds = 15 [default = 60];
+    optional uint64 RestoreReadBufferSizeLimit = 16 [default = 268435456]; // 256 MB
 }
 
 message TSchemeShardConfig {
diff --git a/ydb/core/protos/flat_scheme_op.proto b/ydb/core/protos/flat_scheme_op.proto
index 8f6a0502c0..3f710d1270 100644
--- a/ydb/core/protos/flat_scheme_op.proto
+++ b/ydb/core/protos/flat_scheme_op.proto
@@ -871,7 +871,7 @@ message TS3Settings {
     message TLimits {
         optional uint32 ReadBatchSize = 1 [default = 8388608]; // 8 MB
         optional uint32 MinWriteBatchSize = 2 [default = 5242880]; // 5 MB
-        optional uint32 ReadBufferSizeLimit = 3 [default = 67108864]; // 64 MB
+        reserved 3; // ReadBufferSizeLimit
     };
 
     optional TLimits Limits = 100;
diff --git a/ydb/core/tx/datashard/import_s3.cpp b/ydb/core/tx/datashard/import_s3.cpp
index 571cb448aa..9227522c45 100644
--- a/ydb/core/tx/datashard/import_s3.cpp
+++ b/ydb/core/tx/datashard/import_s3.cpp
@@ -696,7 +696,7 @@ public:
         , LogPrefix_(TStringBuilder() << "s3:" << TxId)
         , Retries(task.GetNumberOfRetries())
         , ReadBatchSize(task.GetS3Settings().GetLimits().GetReadBatchSize())
-        , ReadBufferSizeLimit(task.GetS3Settings().GetLimits().GetReadBufferSizeLimit())
+        , ReadBufferSizeLimit(AppData()->DataShardConfig.GetRestoreReadBufferSizeLimit())
     {
     }