# S01026 {#s01026}

## Error Code {#error_code .section}

S01026

## Error Message {#error_message .section}

`CacheDumpTaskDispatcher::<function> <action>. Out of memory error occurred while <desc>. Will retry in <retryInterval> seconds. RefId:S01026`

## Probable Causes {#probable_causes .section}

`CacheDumpTaskDispatcher` periodically flushes the data cached in TSDB to disk. This process may cause an out-of-memory \(OOM\) error, and this error is reported. `CacheDumpTaskDispatcher` will retry after a certain interval. This operation will keep retrying until the TSDB flush operation is completed.

In the error message:

-   *function*: the executed function.
-   *action*: the action `CacheDumpTaskDispatcher` is executing.
-   *desc*: the action description.
-   *retryInterval*: the retry interval, usually 1 second.

## Solutions {#solutions .section}

Check if null values are contained in the partitioning column.

**Parent topic:**[Error Code Reference](../../Troubleshooting/ErrorCode.md)

