我想解析一个大文件(650万行),但得到了提到的内存不足错误。我使用相同的方法来读取大约50K行的其他文件,并且它工作得很快。这里运行得非常慢,然后失败并出现错误。我最初有2 GB专用于intelliJ,我将其更改为4 GB(-Xmx4000m),然后是6 GB(-Xmx6000m),并且仍然以相同的错误结束。我的电脑只有8 GB内存,所以我不能再做更高的了。有什么建议么?读取较大的管道分隔值时超出了GC开销限制文件
谢谢!
public static List<UmlsEntry> umlsEntries(Resource resource) throws
IOException {
return CharStreams.readLines(new InputStreamReader(resource.getInputStream())).stream().distinct()
.map(UmlsParser::toUmlsEntry).collect(Collectors.toList());
}
private static UmlsEntry toUmlsEntry(String line) {
String[] umlsEntry = line.split("|");
return new UmlsEntry(umlsEntry[UNIQUE_IDENTIFIER_FOR_CONCEPT_COLUMN_INDEX],
umlsEntry[LANGUAGE_OF_TERM_COLUMN_INDEX], umlsEntry[TERM_STATUS_COLUMN_INDEX],
umlsEntry[UNIQUE_IDENTIFIER_FOR_TERM_COLUMN_INDEX], umlsEntry[STRING_TYPE_COLUMN_INDEX],
umlsEntry[UNIQUE_IDENTIFIER_FOR_STRING_COLUMN_INDEX],
umlsEntry[IS_PREFERRED_STRING_WITHIN_THIS_CONCEPT_COLUMN_INDEX],
umlsEntry[UNIQUE_IDENTIFIER_FOR_ATOM_COLUMN_INDEX], umlsEntry[SOURCE_ASSERTED_ATOM_INDENTIFIER_COLUMN_INDEX],
umlsEntry[SOURCE_ASSERTED_CONCEPT_IDENTIFIER_COLUMN_INDEX],
umlsEntry[SOURCE_ASSERTED_DESCRIPTOR_IDENTIFIER_COLUMN_INDEX],
umlsEntry[ABBREVIATED_SOURCE_NAME_COLUMN_IDENTIFIER_COLUMN_INDEX],
umlsEntry[ABBREVIATION_FOR_TERM_TYPE_IN_SOURCE_VOCABULARY_COLUMN_INDEX],
umlsEntry[MOST_USEFUL_SOURCE_ASSERTED_IDENTIFIER_COLUMN_INDEX], umlsEntry[STRING_COLUMN_INDEX],
umlsEntry[SOURCE_RESTRICTION_LEVEL_COLUMN_INDEX], umlsEntry[SUPPRESSIBLE_FLAG_COLUMN_INDEX],
umlsEntry[CONTENT_VIEW_FLAG_COLUMN_INDEX]);
}
请发布堆栈跟踪。哪一行导致错误? – ItamarG3
啊我没有复制它,当我外出吃午饭时我会运行它,它使用我所有的记忆,所以我几乎不能做任何事情。将很快与我联系... – Rotavator