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https://issues.apache.org/jira/browse/IOTDB-326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17217463#comment-17217463
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DaweiLiu commented on IOTDB-326:
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This has been implemented in the SeriesAggregateReader
> We need a random skip reader
> ----------------------------
>
> Key: IOTDB-326
> URL: https://issues.apache.org/jira/browse/IOTDB-326
> Project: Apache IoTDB
> Issue Type: New Feature
> Reporter: DaweiLiu
> Priority: Major
>
> On the current read method, the smallest read unit is page, which means that
> after initializing a reader, I will read directly to the first available
> pageheader, which is very time consuming when chunkmetadata or certain
> aggregations are available.
> Therefore, I think we should design a random read mode so that chunkmeta can
> filter the chunks directly when using it, thus saving time.
> Here's an example:
> {code:java}
> while (hasNextChunk()) {
> if ( can skip this chunk) {
> continue;
> } else {
> chunk = readChunk();
> while (chunk.hasNextPage) {
> if (can skip this page) {
> continue;
> } else {
> page = readPage();
> }
> }
> }
> }{code}
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