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fixes issue with shiftOrResize when a mark occurs before and a reset … #1194

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PHaroZ
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@PHaroZ PHaroZ commented Jan 17, 2023

In ru.yandex.clickhouse.response.StreamSplitter if mark() is called (eg from ru.yandex.clickhouse.response.ClickHouseResultSet#onTheSeparatorRow) and then shiftOrResize() occurs, then reset() leaves the stream in an invalid result.

posNext and posRead are reset but buf still contain the next chunk of data.

In such a case ru.yandex.clickhouse.response.ClickHouseResultSet#getTotals fails if the data of the total line are split across two chunks of data.

I know this class should be removed but, while waiting for a new stable version, this issue cause unavoidable error. (and, as far as I know, there is no equivalent feature in the new jdbc driver)

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CLAassistant commented Jan 17, 2023

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@PHaroZ PHaroZ marked this pull request as ready for review January 17, 2023 14:04
@zhicwu
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zhicwu commented Jan 18, 2023

Hi @PHaroZ, thanks for sharing. As of now, in 0.3.2+, the last row in result set is the total, which might be weird. Perhaps we can fix this by adding multi-resultset support, which returns two resultsets for a with total query.

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4 participants