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Fix empty columns case

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This commit is contained in:
alesapin 2020-08-31 16:39:27 +03:00
parent 726f7f9823
commit 067eb4599d
1 changed files with 3 additions and 2 deletions
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5
src/Storages/MergeTree/IMergeTreeDataPart.cpp
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@ -541,8 +541,9 @@ CompressionCodecPtr IMergeTreeDataPart::detectDefaultCompressionCodec() const
CompressionCodecPtr result = nullptr;
for (const auto & part_column : columns)
{
/// It was compressed with default codec
if (!storage_columns.hasCompressionCodec(part_column.name))
/// It was compressed with default codec and it's not empty
auto column_size = getColumnSize(part_column.name, *part_column.type);
if (column_size.data_compressed != 0 && !storage_columns.hasCompressionCodec(part_column.name))
{
result = getCompressionCodecForFile(volume->getDisk(), getFullRelativePath() + getFileNameForColumn(part_column) + ".bin");
break;