fix

Author: zhyass

src/query/storages/fuse/src/operations/mutation/mutator/recluster_mutator.rs

@@ -109,7 +109,7 @@ impl ReclusterMutator {
                 .summary
                 .uncompressed_byte_size
                 .div_ceil(snapshot.summary.block_count) as usize,
-            block_thresholds.max_bytes_per_block / 2,
+            block_thresholds.min_bytes_per_block,
         );
         Ok(Self {
             ctx,
@@ -206,7 +206,7 @@ impl ReclusterMutator {
             settings.get_max_memory_usage()? - GLOBAL_MEM_STAT.get_memory_usage() as u64;
         let memory_threshold = settings
             .get_recluster_block_size()?
-            .min(avail_memory_usage * 30 / 100) as usize;
+            .min(avail_memory_usage * 50 / 100) as usize;
         // specify a rather small value, so that `recluster_block_size` might be tuned to lower value.
         let max_blocks_num = (memory_threshold / self.average_size).max(2) * self.max_tasks;
         let block_per_seg = self.block_thresholds.block_per_segment;